diff --git a/.github/build_linux.sh b/.github/build_linux.sh
new file mode 100755
index 00000000..e2d7086d
--- /dev/null
+++ b/.github/build_linux.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -xe
+
+readonly build=$(git rev-list --abbrev-commit --max-count=1 HEAD)
+sed -i "s/@GIT_COMMIT@/$build/" buildinfo.pas
+
+pushd test
+lazbuild transguitest.lpi "--lazarusdir=${TRANSGUI_LAZARUS_DIR}"
+./units/transguitest -a
+popd
+
+lazbuild transgui.lpi --ws=qt5 --build-mode=Release "--lazarusdir=${TRANSGUI_LAZARUS_DIR}"
+cd units
+
+readonly app_ver=$(xmllint --xpath 'string(//StringTable/@ProductVersion)' ../transgui.lpi)
+LINUXDEPLOY_OUTPUT_VERSION=$app_ver linuxdeploy-x86_64.AppImage \
+  -e transgui --create-desktop-file --appdir AppDir \
+  --output appimage -i ../transgui.png --plugin qt
+sha256sum transgui-${app_ver}-x86_64.AppImage
+mv transgui-${app_ver}-x86_64.AppImage transgui-x86_64.AppImage
diff --git a/.github/build_ubuntu.sh b/.github/build_ubuntu.sh
deleted file mode 100755
index f1c93d57..00000000
--- a/.github/build_ubuntu.sh
+++ /dev/null
@@ -1,74 +0,0 @@
-#!/usr/bin/env bash
-
-set -xe
-
-readonly repo_dir=$PWD
-readonly sdk_dir=~/.transgui_sdk
-readonly fpc_installdir="${sdk_dir}/fpc-3.2.4-rc1"
-readonly fpc_basepath="${fpc_installdir}/lib/fpc/3.2.4"
-
-fpc_lazarus_build_install() {
-  sudo apt install -yqq --no-install-recommends fpc build-essential
-
-  fpcmkcfg -d basepath=/usr/lib/x86_64-linux-gnu/fpc/3.2.2 -o ~/.fpc.cfg
-
-  mkdir -p "$sdk_dir"
-  cd "$sdk_dir"
-  readonly fpc324_rc1_commit='d78e2897014a69f56a1cfb53c75335c4cc37ba0e'
-  curl -L -o fpc-src.tar.bz2 "https://gitlab.com/freepascal.org/fpc/source/-/archive/${fpc324_rc1_commit}/source-${fpc324_rc1_commit}.tar.bz2"
-  tar xf fpc-src.tar.bz2
-  mv "source-${fpc324_rc1_commit}" fpc-src
-  cd fpc-src
-
-  make all
-  mkdir -p "${fpc_installdir}"
-  make PREFIX=$fpc_installdir install
-  export PATH=${fpc_installdir}/bin:${fpc_basepath}:$PATH
-  fpcmkcfg -d basepath=${fpc_basepath} -o ~/.fpc.cfg
-
-  cd "$sdk_dir"
-  local -r lazarus_commit='4e69368d79e3801ad26a7bc7c1eda0ad3cf7dcc4'
-  curl -L -o lazarus-src.tar.bz2 "https://gitlab.com/dkk089/lazarus/-/archive/${lazarus_commit}/lazarus-${lazarus_commit}.tar.bz2"
-  tar xf lazarus-src.tar.bz2
-  mv "lazarus-${lazarus_commit}" lazarus
-  cd lazarus
-  make bigide LCL_PLATFORM=qt5
-  export PATH=$PWD:$PATH
-}
-
-sudo apt update -yqq
-sudo apt install -yqq build-essential libfuse2 qtbase5-dev-tools qt5-qmake libxml2-utils
-
-curl -L -O https://github.com/davidbannon/libqt5pas/releases/download/v1.2.15/libqt5pas1_2.15-1_amd64.deb
-curl -L -O https://github.com/davidbannon/libqt5pas/releases/download/v1.2.15/libqt5pas-dev_2.15-1_amd64.deb
-sudo apt install ./libqt5pas1_2.15-1_amd64.deb ./libqt5pas-dev_2.15-1_amd64.deb
-
-if [[ -d $sdk_dir ]]; then
-  export PATH=${sdk_dir}/lazarus:${fpc_installdir}/bin:${fpc_basepath}:$PATH
-  fpcmkcfg -d basepath=${fpc_basepath} -o ~/.fpc.cfg
-else
-  fpc_lazarus_build_install
-  cd "$repo_dir"
-fi
-
-build=$(git rev-list --abbrev-commit --max-count=1 HEAD)
-sed -i "s/@GIT_COMMIT@/$build/" buildinfo.pas
-
-pushd test
-lazbuild transguitest.lpi --lazarusdir=${sdk_dir}/lazarus
-./units/transguitest -a
-popd
-
-lazbuild transgui.lpi --ws=qt5 --build-mode=Release --lazarusdir=${sdk_dir}/lazarus
-cd units
-
-curl -L -O https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
-chmod +x linuxdeploy-x86_64.AppImage
-curl -L -O https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage
-chmod +x linuxdeploy-plugin-qt-x86_64.AppImage
-
-app_ver=$(xmllint --xpath 'string(//StringTable/@ProductVersion)' ../transgui.lpi)
-VERSION=$app_ver ./linuxdeploy-x86_64.AppImage -e transgui --create-desktop-file \
-  --appdir AppDir --output appimage -i ../transgui.png --plugin qt
-sha256sum transgui-${app_ver}-x86_64.AppImage
-mv transgui-${app_ver}-x86_64.AppImage transgui-x86_64.AppImage
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/linux.yml
similarity index 54%
rename from .github/workflows/ubuntu.yml
rename to .github/workflows/linux.yml
index 6e18e19b..7c6f1e43 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/linux.yml
@@ -1,4 +1,4 @@
-name: Ubuntu Build
+name: Linux Build
 
 on:
   push:
@@ -7,23 +7,21 @@ on:
     branches: [main, develop]
 
 jobs:
-  build-ubuntu:
+  build-linux:
 
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
+    container: lighterowl/transgui-sdk:1.0
 
     steps:
     - uses: actions/checkout@v1
       with:
         submodules: recursive
 
-    - uses: actions/cache@v4
-      with:
-        path: |
-          ~/.transgui_sdk/lazarus
-          ~/.transgui_sdk/fpc-3.2.4-rc1
-        key: ubuntu-fpc-lazarus
-
-    - run: .github/build_ubuntu.sh
+    - run: |
+        git config --global --add safe.directory /__w/transgui/transgui
+        export HOME=/root
+        source /root/.transgui_sdk/source.me
+        ./.github/build_linux.sh
 
     - uses: actions/upload-artifact@v4
       with:
diff --git a/README.md b/README.md
index 882721d8..5ca98610 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ cd transgui
 lazbuild transgui.lpi
 ```
 
-If you hit trouble, have a look at `build_` scripts in the `.github` folder. They are used to build the project for each of the supported platforms in GitHub Actions.
+If you hit trouble, have a look at `build_` scripts in the `.github` folder. They are used to build the project for each of the supported platforms in GitHub Actions. If you can run Docker containers, you might find it easier to just use [`lighterowl/transgui-sdk`](https://hub.docker.com/r/lighterowl/transgui-sdk/) which includes the proper versions of FPC and Lazarus.
 
 Due to issues with fpc 3.2.2 mentioned below, it is recommended to build transgui with a development version of the Free Pascal compiler. The `build_` scripts include necessary code that downloads and compiles the development version from source.