diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 1949d1a..532581b 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -12,5 +12,5 @@
 		}
 	},
 	"dockerComposeFile": "./../compose.yaml",
-	"service": "dev"
-}
\ No newline at end of file
+	"service": "shell"
+}
diff --git a/.devcontainer/local/devcontainer.json b/.devcontainer/local/devcontainer.json
index 3dd62e4..9e89dba 100644
--- a/.devcontainer/local/devcontainer.json
+++ b/.devcontainer/local/devcontainer.json
@@ -1,24 +1,24 @@
 {
-  "name": "pskel (for Local)",
-  "customizations": {
-    "vscode": {
-      "extensions": [
-        "ms-vscode.cpptools",
-        "ms-vscode.cpptools-extension-pack",
-        "maelvalais.autoconf",
-        "ms-azuretools.vscode-docker",
-		"editorconfig.editorconfig"
-      ]
-    }
-  },
-  "dockerComposeFile": "./../../compose.yaml",
-  "service": "dev",
-  "mounts": [
-    {
-      "type": "bind",
-      "source": "./",
-      "target": "/workspace/pskel"
-    }
-  ],
-  "workspaceFolder": "/workspace/pskel"
+    "name": "pskel (for Local)",
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-vscode.cpptools",
+                "ms-vscode.cpptools-extension-pack",
+                "maelvalais.autoconf",
+                "ms-azuretools.vscode-docker",
+                "editorconfig.editorconfig"
+            ]
+        }
+    },
+    "dockerComposeFile": "./../../compose.yaml",
+    "service": "shell",
+    "mounts": [
+        {
+            "type": "bind",
+            "source": "./",
+            "target": "/workspace/pskel"
+        }
+    ],
+    "workspaceFolder": "/workspace/pskel"
 }
diff --git a/.dockerignore b/.dockerignore
index 6b8710a..723dc5c 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1 +1,4 @@
-.git
+**/.git
+**/README.md
+**/LICENSE
+**/.editorconfig
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 639d51c..7d348e1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        arch: ["amd64", "arm64v8", "s390x"]
+        platform: ["linux/amd64", "linux/arm64/v8", "linux/s390x"]
         version: ["8.1", "8.2", "8.3"]
         type: ["cli", "zts"]
         distro: ["bookworm", "alpine"]
@@ -20,30 +20,30 @@ jobs:
           uses: docker/setup-buildx-action@v3
         - name: Build container
           run: |
-            docker compose build --pull --no-cache --build-arg IMAGE=${{ matrix.arch }}/php --build-arg TAG=${{ matrix.version }}-${{ matrix.type }}-${{ matrix.distro }} --build-arg PSKEL_SKIP_DEBUG=${{ matrix.arch != 'amd64' && '1' || '' }}		  
+            docker compose build --pull --no-cache --build-arg PLATFORM="${{ matrix.platform }}" --build-arg IMAGE="php" --build-arg TAG="${{ matrix.version }}-${{ matrix.type }}-${{ matrix.distro }}"
         - name: Run tests
           run: |
-            docker compose run --rm --entrypoint=/usr/bin/pskel_test --env TEST_EXTENSION=1 dev
+            docker compose run --rm shell pskel test
         - name: Test extension with PHP Debug Build
-          if: matrix.arch == 'amd64'
+          if: matrix.platform == 'linux/amd64'
           run: |
-            docker compose run --rm --entrypoint=/usr/bin/pskel_test --env TEST_EXTENSION_DEBUG=1 dev
+            docker compose run --rm shell pskel test debug
         - name: Test extension with Valgrind
-          if: matrix.arch == 'amd64'
+          if: matrix.platform == 'linux/amd64'
           run: |
-            docker compose run --rm --entrypoint=/usr/bin/pskel_test --env TEST_EXTENSION_VALGRIND=1 dev
+            docker compose run --rm shell pskel test valgrind
         - name: Test extension with LLVM Sanitizer (MemorySanitizer)
-          if: matrix.arch == 'amd64' && matrix.distro != 'alpine'
+          if: matrix.platform == 'linux/amd64' && matrix.distro != 'alpine'
           run: |
-            docker compose run --rm --entrypoint=/usr/bin/pskel_test --env TEST_EXTENSION_MSAN=1 dev
+            docker compose run --rm shell pskel test msan
         - name: Test extension with LLVM Sanitizer (AddressSanitizer)
-          if: matrix.arch == 'amd64' && matrix.distro != 'alpine'
+          if: matrix.platform == 'linux/amd64' && matrix.distro != 'alpine'
           run: |
-            docker compose run --rm --entrypoint=/usr/bin/pskel_test --env TEST_EXTENSION_ASAN=1 dev
+            docker compose run --rm shell pskel test asan
         - name: Test extension with LLVM Sanitizer (UndefinedBehaviorSanitizer)
-          if: matrix.arch == 'amd64' && matrix.distro != 'alpine'
+          if: matrix.platform == 'linux/amd64' && matrix.distro != 'alpine'
           run: |
-            docker compose run --rm --entrypoint=/usr/bin/pskel_test --env TEST_EXTENSION_UBSAN=1 dev
+            docker compose run --rm shell pskel test ubsan
   # Windows:
   #   runs-on: windows-2022
   #   defaults:
@@ -51,7 +51,7 @@ jobs:
   #       shell: cmd
   #   strategy:
   #     matrix:
-  #       arch: ["x64"]
+  #      .platform: ["x64"]
   #       version: ["8.1", "8.2", "8.3"]
   #       ts: ["nts", "ts"]
   #   steps:
@@ -61,20 +61,20 @@ jobs:
   #       id: setup-php
   #       uses: php/setup-php-sdk@v0.8
   #       with:
-  #         arch: ${{ matrix.arch }}
+  #        .platform: ${{ matrix.platform }}
   #         version: ${{ matrix.version }}
   #         ts: ${{ matrix.ts }}
   #     - name: Enable developer command prompt
   #       uses: ilammy/msvc-dev-cmd@v1
   #       with:
-  #         arch: ${{ matrix.arch }}
+  #        .platform: ${{ matrix.platform }}
   #         toolset: ${{ steps.setup-php.outputs.toolset }}
   #     - name: phpize
   #       working-directory: ext
   #       run: phpize
   #     - name: configure
   #       working-directory: ext
-  #       run: configure --enable-skeleton --with-prefix=${{ steps.setup-php.outputs.prefix }}
+  #       run: configure --enable-SKELETON_NAME --with-prefix=${{ steps.setup-php.outputs.prefix }}
   #     - name: make
   #       working-directory: ext
   #       run: nmake
diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
deleted file mode 100644
index abf07c8..0000000
--- a/.vscode/c_cpp_properties.json
+++ /dev/null
@@ -1,21 +0,0 @@
-{
-    "configurations": [
-        {
-            "name": "Linux",
-            "includePath": [
-                "${workspaceFolder}/**",
-                "/usr/local/include/php",
-                "/usr/local/include/php/TSRM",
-                "/usr/local/include/php/Zend",
-                "/usr/local/include/php/ext",
-                "/usr/local/include/php/include",
-                "/usr/local/include/php/main",
-                "/usr/local/include/php/sapi"
-            ],
-            "defines": [],
-            "compilerPath": "/usr/bin/gcc",
-            "cStandard": "c99"
-        }
-    ],
-    "version": 4
-}
diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 00c85c7..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-    "files.associations": {
-        "*.phpt": "php",
-		"*.c": "c",
-		"*.h": "c",
-		"*.cpp": "cpp",
-		"*.hpp": "cpp",
-		"*.cc": "cpp",
-		"*.cxx": "cpp"
-    },
-    "editor.tabSize": 4,
-    "editor.insertSpaces": false,
-    "editor.detectIndentation": false
-}
diff --git a/Dockerfile b/Dockerfile
index 883dc20..9a188dc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,129 +1,30 @@
+ARG PLATFORM=${BUILDPLATFORM:-linux/amd64}
 ARG IMAGE=php
-ARG TAG=8.3-cli
+ARG TAG=8.3-zts-bookworm
 
-FROM ${IMAGE}:${TAG}
+FROM --platform=${PLATFORM} ${IMAGE}:${TAG}
 
-ARG PSKEL_SKIP_DEBUG=""
-ARG PSKEL_EXTRA_CONFIGURE_OPTIONS=""
+COPY ./pskel.sh /usr/local/bin/pskel
 
 ENV USE_ZEND_ALLOC=0
+ENV USE_TRACKED_ALLOC=1
 ENV ZEND_DONT_UNLOAD_MODULES=1
-ENV PSKEL_SKIP_DEBUG=${PSKEL_SKIP_DEBUG}
-ENV PSKEL_EXTRA_CONFIGURE_OPTIONS=${PSKEL_EXTRA_CONFIGURE_OPTIONS}
 
-RUN if test -f "/etc/debian_version"; then \
-      apt-get update && \
-      DEBIAN_FRONTEND="noninteractive" apt-get install -y \
-        "build-essential" "bison" "valgrind" "llvm" "clang" "zlib1g-dev" "libsqlite3-dev" "git" && \
-      if test "${PSKEL_SKIP_DEBUG}" = ""; then \
-        docker-php-source extract && \
-        cd "/usr/src/php" && \
-          CFLAGS="-fpic -fpie -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-pie" ./configure --disable-all \
-              --includedir="/usr/local/include/gcc-valgrind-php" --program-prefix="gcc-valgrind-" \
-              --disable-cgi --disable-fpm --enable-cli \
-              --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-              --enable-debug --without-pcre-jit "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-              --with-valgrind \
-              ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-              --enable-option-checking=fatal && \
-          make -j$(nproc) && \
-          make install && \
-        cd - && \
-        docker-php-source delete && \
-        docker-php-source extract && \
-        cd "/usr/src/php" && \
-          CC=clang CXX=clang++ CFLAGS="-fsanitize=memory -fno-sanitize-recover -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-fsanitize=memory" ./configure \
-              --includedir="/usr/local/include/clang-msan-php" --program-prefix="clang-msan-" \
-              --disable-cgi --disable-all --disable-fpm --enable-cli \
-              --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-              --enable-debug --without-pcre-jit "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-              --enable-memory-sanitizer \
-              ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-              --enable-option-checking=fatal && \
-          make -j$(nproc) && \
-          make install && \
-        cd - && \
-        docker-php-source delete && \
-        docker-php-source extract && \
-        cd "/usr/src/php" && \
-          CC=clang CXX=clang++ CFLAGS="-fsanitize=address -fno-sanitize-recover -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-fsanitize=address" ./configure \
-              --includedir="/usr/local/include/clang-asan-php" --program-prefix="clang-asan-" \
-              --disable-cgi --disable-all --disable-fpm --enable-cli \
-              --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-              --enable-debug --without-pcre-jit "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-              --enable-address-sanitizer \
-              ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-              --enable-option-checking=fatal && \
-          make -j$(nproc) && \
-          make install && \
-        cd - && \
-        docker-php-source delete && \
-        docker-php-source extract && \
-        cd "/usr/src/php" && \
-          CC=clang CXX=clang++ CFLAGS="-fsanitize=undefined -fno-sanitize-recover -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-fsanitize=undefined" ./configure \
-              --includedir="/usr/local/include/clang-ubsan-php" --program-prefix="clang-ubsan-" \
-              --disable-cgi --disable-all --disable-fpm --enable-cli \
-              --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-              --enable-debug --without-pcre-jit "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-              --enable-undefined-sanitizer \
-              ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-              --enable-option-checking=fatal && \
-          make -j$(nproc) && \
-          make install && \
-        cd - && \
-        docker-php-source delete && \
-        docker-php-source extract && \
-        cd "/usr/src/php" && \
-          CFLAGS="-fpic -fpie -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-pie" ./configure --disable-all \
-              --includedir="/usr/local/include/debug-php" --program-prefix="debug-" \
-              --disable-cgi --disable-fpm --enable-cli \
-              --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-              --enable-debug "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-              ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-              --enable-option-checking=fatal && \
-          make -j$(nproc) && \
-          make install && \
-        cd - && \
-        docker-php-source delete; \
-      fi; \
-    elif test -f "/etc/alpine-release"; then \
-        apk add --no-cache ${PHPIZE_DEPS} "bison" "valgrind" "valgrind-dev" "zlib-dev" "sqlite-dev" "git" && \
-        if test "${PSKEL_SKIP_DEBUG}" = ""; then \
-          docker-php-source extract && \
-          cd "/usr/src/php" && \
-              CFLAGS="-fpic -fpie -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-pie" ./configure --disable-all \
-                  --includedir="/usr/local/include/gcc-valgrind-php" --program-prefix="gcc-valgrind-" \
-                  --disable-cgi --disable-fpm --enable-cli \
-                  --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-                  --enable-debug --without-pcre-jit "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-                  --with-valgrind \
-                  ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-                  --enable-option-checking=fatal && \
-              make -j$(nproc) && \
-              make install && \
-          cd - && \
-          docker-php-source delete && \
-          docker-php-source extract && \
-          cd "/usr/src/php" && \
-              CFLAGS="-fpic -fpie -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-pie" ./configure --disable-all \
-                  --includedir="/usr/local/include/debug-php" --program-prefix="debug-" \
-                  --disable-cgi --disable-fpm --enable-cli \
-                  --enable-mysqlnd --enable-pdo --with-pdo-mysql --with-pdo-sqlite \
-                  --enable-debug "$(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';")" \
-                  ${PSKEL_EXTRA_CONFIGURE_OPTIONS} \
-                  --enable-option-checking=fatal && \
-              make -j$(nproc) && \
-              make install && \
-          cd - && \
-          docker-php-source delete; \
-        fi; \
-    fi && \
-    docker-php-source extract && \
-    ln -s "/usr/src/php/build/gen_stub.php" "/usr/local/bin/gen_stub.php"
-
-WORKDIR "/usr/src/php"
-
-COPY ./pskel_test.sh /usr/bin/pskel_test
-COPY ./pskel_init_extension.sh /usr/bin/pskel_init_extension
+RUN docker-php-source extract \
+ && if test -f "/etc/debian_version"; then \
+      echo "deb http://apt.llvm.org/bookworm/ llvm-toolchain-bookworm main" > "/etc/apt/sources.list.d/llvm.list" \
+ &&   echo "deb-src http://apt.llvm.org/bookworm/ llvm-toolchain-bookworm main" >> "/etc/apt/sources.list.d/llvm.list" \
+ &&   curl -fsSL "https://apt.llvm.org/llvm-snapshot.gpg.key" -o "/etc/apt/trusted.gpg.d/apt.llvm.org.asc" \
+ &&   apt-get update \
+ &&   DEBIAN_FRONTEND="noninteractive" apt-get install -y "bison" "re2c" "zlib1g-dev" "libsqlite3-dev" "libxml2-dev" \
+        "autoconf" "pkg-config" "make" "gcc" "valgrind" "git" \
+        "clang-20" \
+ &&   update-alternatives --install "/usr/bin/clang" clang "/usr/bin/clang-20" 100 \
+ &&   update-alternatives --install "/usr/bin/clang++" clang++ "/usr/bin/clang++-20" 100; \
+    else \
+      apk add --no-cache "bison" "zlib-dev" "sqlite-dev" "libxml2-dev" \
+        "autoconf" "pkgconfig" "make" "gcc" "g++" "valgrind" "valgrind-dev" \
+        "musl-dev" "git"; \
+    fi
 
 COPY ./ext /ext
diff --git a/README.md b/README.md
index 22c9e21..8ddb61b 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,8 @@ A skeleton project for quickly setting up an environment to develop extensions f
 1. Install [Visual Studio Code](https://code.visualstudio.com/) and Docker Desktop (or an alternative engine).
 1. Install the [Remote Container](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) extension in VSCode.
 1. Open the directory and open it with the `Remote Container` extension.
-1. Run `pskel_init_extension` command.
-2. Run `pskel_test` command for testing.
+1. Run `pskel init <extension_name>` .
+2. Run `pskel test [debug|valgrind|msan|asan|ubsan]` command for testing.
 
 ### Q&A
 
@@ -16,32 +16,12 @@ A skeleton project for quickly setting up an environment to develop extensions f
 
 Yes. Pskel comes pre-setup with MySQL as a example. If you want to add something, you can easily do so by editing the `compose.yaml`.
 
-#### Can I use a debug version of PHP?
-
-A debug build of PHP is included in advance. Debug builds using GCC and Clang are available, and Valgrind support is enabled. With the Clang build, you can also use MemorySanitizer.
-
-They each have the following binary prefixes. The build toolchains are the same.
-
-- `debug-php`
-- `gcc-valgrind-php`
-- `clang-msan-php`
-- `clang-asan-php`
-- `clang-ubsan-php`
-
-For example, the method to test the extension using GCC + Valgrind is as follows:
-
-```
-# gcc-valgrind-phpize
-# ./configure --with-php-config=$(which gcc-valgrind-php-config)
-# TEST_PHP_ARGS="-q -m --show-diff" make -j$(nproc) test
-```
-
 #### Can I debug using gdb?
 
 Yes. Build using the debug version of PHP and run as follows:
 
 ```
-# gdb --args gcc-valgrind-php -dextension=./modules/your_extension_name.so example.php
+# gdb --args <php_binary> -dextension=./modules/your_extension_name.so example.php
 ```
 
 #### Can I develop using something other than Visual Studio Code?
diff --git a/compose.yaml b/compose.yaml
index 3e408ca..5903779 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -1,15 +1,14 @@
 services:
-  dev:
+  shell:
     build:
       context: ./
       dockerfile: ./Dockerfile
     cap_add:
-      - SYS_PTRACE
+      - SYS_ADMIN
     security_opt:
       - seccomp:unconfined
     privileged: true
     tty: true
-    command: ["sleep", "infinity"]
     # depends_on:
     #   - mysql
   # mysql:
diff --git a/ext/.gitkeep b/ext/.gitkeep
index 54793b1..f1eaf86 100644
--- a/ext/.gitkeep
+++ b/ext/.gitkeep
@@ -1 +1 @@
-pskel_uninitialized
\ No newline at end of file
+pskel_uninitialized
diff --git a/pskel.sh b/pskel.sh
new file mode 100755
index 0000000..5394697
--- /dev/null
+++ b/pskel.sh
@@ -0,0 +1,146 @@
+#!/bin/sh -e
+
+cmd_usage() {
+    cat << EOF
+Usage: ${0} [task] ...
+
+Available commands:
+    init	create new extension
+    test	test extension
+    build	build PHP runtime
+EOF
+}
+
+cmd_init() {
+  if test "${1}" = "-h" || test "${1}" = "--help" || test "${#}" -lt 1; then
+    cat << EOF
+Usage: $0 init [extension_name] [ext_skel.php options...]
+EOF
+    return 0
+  fi
+
+  PSKEL_EXT_DIR="/ext"
+
+  if test -d "/workspace/pskel/ext"; then
+    echo "[Pskel] Development containers workspace detected, use \"/workspace/pskel/ext\"." >&2
+    PSKEL_EXT_DIR="/workspace/pskel/ext"
+  fi
+
+  /usr/local/bin/php "/usr/src/php/ext/ext_skel.php" --ext "${1}" --dir "/tmp" ${@}
+  rm -rf "${PSKEL_EXT_DIR}"
+  mv "/tmp/${1}" "${PSKEL_EXT_DIR}"
+}
+
+cmd_test() {
+  if test "${1}" = "-h" || test "${1}" = "--help"; then
+    cat << EOF
+Usage: ${0} test [test_type|php_binary_name]
+env:
+  CFLAGS, CPPFLAGS:	Compile flags
+  TEST_PHP_ARGS:	Test flags
+EOF
+    return 0
+  fi
+
+  if test "x${1}" = "x"; then
+    CC="$(which "gcc")"; CXX="$(which "g++")"; CMD="php"
+  else
+    case "${1}" in
+      debug)
+        if ! type "debug-php" > /dev/null 2>&1; then
+          CC="$(which "gcc")" CXX="$(which "g++")" CFLAGS="-DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="${CFLAGS}" CONFIGURE_OPTS="--enable-debug $(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';") --enable-option-checking=fatal --disable-phpdbg --disable-cgi --disable-fpm --enable-cli --without-pcre-jit --disable-opcache-jit --disable-zend-max-execution-timers" cmd_build "debug"
+        fi && \
+        CC="$(which "gcc")"; CXX="$(which "g++")"; CMD="debug-php";;
+      valgrind)
+        if ! type "gcc-valgrind-php" > /dev/null 2>&1; then
+          CC="$(which "gcc")" CXX="$(which "g++")" CFLAGS="-DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="${CFLAGS}" CONFIGURE_OPTS="--enable-debug $(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';") --enable-option-checking=fatal --disable-phpdbg --disable-cgi --disable-fpm --enable-cli --without-pcre-jit --disable-opcache-jit --disable-zend-max-execution-timers --with-valgrind" cmd_build "gcc-valgrind"
+        fi && \
+        TEST_PHP_ARGS="${TEST_PHP_ARGS} -m" CC="$(which "gcc")"; CXX="$(which "g++")"; CMD="gcc-valgrind-php";;
+      msan)
+        if ! type "clang-msan-php" > /dev/null 2>&1; then
+          CC="$(which "clang")" CXX="$(which "clang++")" CFLAGS="-DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS} -fsanitize=memory" CONFIGURE_OPTS="--enable-debug $(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';") --enable-option-checking=fatal --disable-phpdbg --disable-cgi --disable-fpm --enable-cli --without-pcre-jit --disable-opcache-jit --disable-zend-max-execution-timers --enable-memory-sanitizer" cmd_build "clang-msan"
+        fi && \
+        CFLAGS="${CFLAGS} -fsanitize=memory"; CPPFLAGS="${CPPFLAGS}"; LDFLAGS="-fsanitize=memory"; CC="$(which "clang")"; CXX="$(which "clang++")"; CMD="clang-msan-php";;
+      asan)
+        if ! type "clang-asan-php" > /dev/null 2>&1; then
+          CC="$(which "clang")" CXX="$(which "clang++")" CFLAGS="-DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS} -fsanitize=address" CONFIGURE_OPTS="--enable-debug $(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';") --enable-option-checking=fatal --disable-phpdbg --disable-cgi --disable-fpm --enable-cli --without-pcre-jit --disable-opcache-jit --disable-zend-max-execution-timers --enable-address-sanitizer" cmd_build "clang-asan"
+        fi && \
+        CFLAGS="${CFLAGS} -fsanitize=address"; CPPFLAGS="${CPPFLAGS}"; LDFLAGS="-fsanitize=address"; CC="$(which "clang")"; CXX="$(which "clang++")"; CMD="clang-asan-php";;
+      ubsan)
+        if ! type "clang-ubsan-php" > /dev/null 2>&1; then
+          CC="$(which "clang")" CXX="$(which "clang++")" CFLAGS="-DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="${CFLAGS}" LDFLAGS="${LDFLAGS} -fsanitize=undefined" CONFIGURE_OPTS="--enable-debug $(php -r "echo PHP_ZTS === 1 ? '--enable-zts' : '';") --enable-option-checking=fatal --disable-phpdbg --disable-cgi --disable-fpm --enable-cli --without-pcre-jit --disable-opcache-jit --disable-zend-max-execution-timers --enable-undefined-sanitizer" cmd_build "clang-ubsan"
+        fi && \
+        CFLAGS="${CFLAGS} -fsanitize=undefined"; CPPFLAGS="${CPPFLAGS}"; LDFLAGS="-fsanitize=undefined"; CC="$(which "clang")"; CXX="$(which "clang++")"; CMD="clang-ubsan-php";;
+      *) CMD="${1}"
+    esac
+  fi
+
+  for BIN in "${CMD}" "${CMD}ize" "${CMD}-config"; do
+    if ! type "${BIN}" > /dev/null 2>&1; then
+      echo "Invalid argument: '${CMD}', executable file not found" >&2
+      exit 1
+    fi
+  done
+
+  PSKEL_EXT_DIR="/ext"
+
+  if test -d "/workspace/pskel/ext"; then
+    echo "[Pskel] Development containers workspace detected, use \"/workspace/pskel/ext\"." >&2
+    PSKEL_EXT_DIR="/workspace/pskel/ext"
+  else
+    if test -f "/ext/.gitkeep" && test $(cat "/ext/.gitkeep") = "pskel_uninitialized"; then
+       echo "[Pskel] Uninitialized project detected, initialize default skeleton." >&2
+       cmd_init "skeleton"
+    fi
+  fi
+
+  cd "${PSKEL_EXT_DIR}"
+    "${CMD}ize"
+    CC=${CC} CXX=${CXX} CFLAGS="${CFLAGS}" CPPFLAGS="${CPPFLAGS}" LDFLAGS="${LDFLAGS}" ./configure --with-php-config="$(which "${CMD}-config")"
+    make clean
+    make -j"$(nproc)"
+    TEST_PHP_ARGS="${TEST_PHP_ARGS} --show-diff -q" make test
+  cd -
+}
+
+cmd_build() {
+  if test "${1}" = "-h" || test "${1}" = "--help"; then
+    cat << EOF
+Usage: ${0} build [php_binary_prefix]
+env:
+  CFLAGS, CPPFLAGS:	Compile flags
+  CONFIGURE_OPTS:	./configure options
+EOF
+    return 0
+  fi
+
+  if ! test "x${1}" = "x"; then
+    CONFIGURE_OPTS="--program-prefix="${1}-" --includedir="/usr/local/include/${1}-php" ${CONFIGURE_OPTS}"
+  fi
+
+  cd "/usr/src/php"
+    ./buildconf --force
+    ./configure ${CONFIGURE_OPTS}
+    make clean
+    make -j"$(nproc)"
+    make install
+    make clean
+  cd -
+}
+
+if [ $# -eq 0 ]; then
+  cmd_usage
+  exit 1
+fi
+
+case "${1}" in
+  help) shift && cmd_usage;;
+  init) shift && cmd_init "${@}";;
+  test) shift && cmd_test "${@}";;
+  build) shift && cmd_build "${@}";;
+  *)
+    echo "${0} error: invalid command: '${1}'" >&2
+    cmd_usage
+    exit 1
+    ;;
+esac
diff --git a/pskel_init_extension.sh b/pskel_init_extension.sh
deleted file mode 100755
index b9fae92..0000000
--- a/pskel_init_extension.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/bin/sh
-
-if test ${#} -lt 1; then
-  echo "Usage: pskel_init_extension <extension_name> --auhor <name> [--onlyunix|--onlywindows] ..."
-  exit 1
-fi
-
-/usr/local/bin/php "/usr/src/php/ext/ext_skel.php" --ext ${1} --dir "/tmp" ${@} && \
-rm -rf "/work/ext" && \
-mv "/tmp/${1}" "/work/ext"
diff --git a/pskel_test.sh b/pskel_test.sh
deleted file mode 100755
index 696c931..0000000
--- a/pskel_test.sh
+++ /dev/null
@@ -1,116 +0,0 @@
-#!/bin/sh -e
-
-case "${1}" in
-  "") ;;
-  "test") TEST_EXTENSION=1;;
-  "debug") TEST_EXTENSION_DEBUG=1;;
-  "valgrind") TEST_EXTENSION_VALGRIND=1;;
-  "msan") TEST_EXTENSION_MSAN=1;;
-  "asan") TEST_EXTENSION_ASAN=1;;
-  "ubsan") TEST_EXTENSION_UBSAN=1;;
-  *) printf "Pskel Test\nUsage:\n\t\t%s\t\t: %s\n\t\t%s\t\t: %s\n\t\t%s\t: %s\n\t\t%s\t\t: %s\n\t\t%s\t\t: %s\n\t\t%s\t\t: %s\n" "test" "Test extension with pre-installed PHP binary. [bin: $(which "php")]" "debug" "Test extension with Debug Build (GCC) binary. [bin: $(which "debug-php")]" "valgrind" "Test extension with GCC binary with Valgrind. [bin: $(which "gcc-valgrind-php")]" "msan" "Test extension with Clang binary with MemorySanitizer. [bin: $(which "clang-msan-php")]" "asan" "Test extension with Clang binary with AddressSanitizer. [bin: $(which "clang-asan-php")]" "ubsan" "Test extension with Clang binary with UndefinedBehaviorSanitizer. [bin: $(which "clang-ubsan-php")]"; exit 0;;
-esac
-
-if test -f "/ext/.gitkeep" && test $(cat "/ext/.gitkeep") = "pskel_uninitialized"; then
-  echo "[Pskel Test] Uninitialized project detected, initialize default skeleton"
-  rm -rf "/ext"
-  /usr/local/bin/php "/usr/src/php/ext/ext_skel.php" --ext "ext" --dir "/"
-fi
-
-PSKEL_WORKDIR="/ext"
-
-if test -d "/work/ext"; then
-  echo "[Pskel Test] DevContainer workspace detected, use \"/work/ext\"."
-  PSKEL_WORKDIR="/work/ext"
-fi
-
-echo "[Pskel Test] BEGIN TEST"
-
-if test "${TEST_EXTENSION}" != ""; then
-  cd "${PSKEL_WORKDIR}"
-  phpize
-  ./configure --with-php-config="$(which php-config)"
-  make clean
-  make -j"$(nproc)"
-  TEST_PHP_ARGS="--show-diff -q" make test
-else
-  echo "[Pskel Test] skip: TEST_EXTENSION is not set"
-fi
-
-if test "${TEST_EXTENSION_DEBUG}" != ""; then
-  cd "${PSKEL_WORKDIR}"
-  debug-phpize
-  ./configure --with-php-config="$(which debug-php-config)"
-  make clean
-  make -j"$(nproc)"
-  TEST_PHP_ARGS="--show-diff -q" make test
-else
-  echo "[Pskel Test] skip: TEST_EXTENSION_DEBUG is not set"
-fi
-
-if test "${TEST_EXTENSION_VALGRIND}" != ""; then
-  if type "gcc-valgrind-php" > /dev/null 2>&1; then
-    cd "${PSKEL_WORKDIR}"
-    gcc-valgrind-phpize
-    ./configure --with-php-config="$(which gcc-valgrind-php-config)"
-    make clean
-    make -j"$(nproc)"
-    TEST_PHP_ARGS="--show-diff -q -m" make test
-  else
-    echo "[Pskel Test] missing gcc-valgrind-php"
-    exit 1
-  fi
-else
-  echo "[Pskel Test] skip: TEST_EXTENSION_VALGRIND is not set"
-fi
-
-if test "${TEST_EXTENSION_MSAN}" != ""; then
-  if type "clang-msan-php" > /dev/null 2>&1; then
-    cd "${PSKEL_WORKDIR}"
-    clang-msan-phpize
-    CC="clang" CXX="clang++" CFLAGS="-fsanitize=memory -DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="-fsanitize=memory -DZEND_TRACK_ARENA_ALLOC ${CPPFLAGS}" LDFLAGS="-fsanitize=memory" ./configure --with-php-config="$(which clang-msan-php-config)"
-    make clean
-    CFLAGS="-fsanitize=memory -DZEND_TRACK_ARENA_ALLOC ${CFLAGS}" CPPFLAGS="-fsanitize=memory -DZEND_TRACK_ARENA_ALLOC ${CPPFLAGS}" LDFLAGS="-fsanitize=memory" make -j"$(nproc)"
-    TEST_PHP_ARGS="--show-diff -q --msan" make test
-  else
-    echo "[Pskel Test] missing clang-msan-php"
-    exit 1
-  fi
-else
-  echo "[Pskel Test] skip: TEST_EXTENSION_MSAN is not set"
-fi
-
-if test "${TEST_EXTENSION_ASAN}" != ""; then
-  if type "clang-asan-php" > /dev/null 2>&1; then
-    cd "${PSKEL_WORKDIR}"
-    clang-asan-phpize
-    CC="clang" CXX="clang++" CFLAGS="-fsanitize=address -DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="-fsanitize=address -DZEND_TRACK_ARENA_ALLOC ${CPPFLAGS}" LDFLAGS="-fsanitize=address" ./configure --with-php-config="$(which clang-asan-php-config)"
-    make clean
-    CFLAGS="-fsanitize=address -DZEND_TRACK_ARENA_ALLOC ${CFLAGS}" CPPFLAGS="-fsanitize=address -DZEND_TRACK_ARENA_ALLOC ${CPPFLAGS}" LDFLAGS="-fsanitize=address" make -j"$(nproc)"
-    TEST_PHP_ARGS="--show-diff -q --asan" make test
-  else
-    echo "[Pskel Test] missing clang-asan-php"
-    exit 1
-  fi
-else
-  echo "[Pskel Test] skip: TEST_EXTENSION_ASAN is not set"
-fi
-
-if test "${TEST_EXTENSION_UBSAN}" != ""; then
-  if type "clang-ubsan-php" > /dev/null 2>&1; then
-    cd "${PSKEL_WORKDIR}"
-    clang-ubsan-phpize
-    CC="clang" CXX="clang++" CFLAGS="-fsanitize=undefined -DZEND_TRACK_ARENA_ALLOC" CPPFLAGS="-fsanitize=undefined -DZEND_TRACK_ARENA_ALLOC ${CPPFLAGS}" LDFLAGS="-fsanitize=undefined" ./configure --with-php-config="$(which clang-ubsan-php-config)"
-    make clean
-    CFLAGS="-fsanitize=undefined -DZEND_TRACK_ARENA_ALLOC ${CFLAGS}" CPPFLAGS="-fsanitize=undefined -DZEND_TRACK_ARENA_ALLOC ${CPPFLAGS}" LDFLAGS="-fsanitize=undefined" make -j"$(nproc)"
-    TEST_PHP_ARGS="--show-diff -q" make test
-  else
-    echo "[Pskel Test] missing clang-ubsan-php"
-    exit 1
-  fi
-else
-  echo "[Pskel Test] skip: TEST_EXTENSION_UBSAN is not set"
-fi
-
-echo "[Pskel Test] END TEST"
-exit 0