add base-updater

.github/workflows/docker-update-base-and-push.yaml

@@ -0,0 +1,18 @@
+name: "docker-update-base-and-push"
+
+on:
+  schedule:
+    - cron: "00 01 * * *"
+
+jobs:
+  docker-build-and-push:
+    runs-on: ubuntu-latest
+    steps: 
+      - name: add builder
+        run: docker run --privileged --rm tonistiigi/binfmt --install all && docker buildx create --use
+      - name: checkout repository
+        uses: actions/checkout@v3
+      - name: login into repository
+        run: echo ${{ secrets.DOCKER_REGISTRY_PASSWORD }} | docker login --username ${{ secrets.DOCKER_REGISTRY_USERNAME }} --password-stdin
+      - name: update base and push
+        run: ./docker-build.sh --push --update-base

.gitignore

@@ -0,0 +1,10 @@
+# folders
+.idea
+.vscode
+builds
+data-local
+node_modules
+target
+
+# files
+package-lock.json

Version.txt

@@ -0,0 +1 @@
+v0.0.1

docker-bake.hcl

@@ -1,19 +1,22 @@
 variable "BASE_IMAGE_DATE" {
     default = "unknown"
 }
+variable "IMAGE" {
+    default = "unknown"
+}
 variable "VERSION" {
     default = "v0.0.1"
 }
 
 target "default" {
     tags = [
-        "madebytimo/nginx:latest",
-        "madebytimo/nginx:${VERSION}",
-        "madebytimo/nginx:${VERSION}-base-${BASE_IMAGE_DATE}"
+        "${IMAGE}:latest",
+        "${IMAGE}:${VERSION}",
+        "${IMAGE}:${VERSION}-base-${BASE_IMAGE_DATE}"
     ]
     platforms = [
         "amd64",
         "arm64",
-        "arm",
+        "arm"
     ]
-}
+}

docker-build.sh

@@ -1,9 +1,60 @@
 #!/usr/bin/env bash
 set -e
 
+BUILD_ARGUMENTS=""
+DEPENDENCIES=(docker)
+UPDATE_BASE=false
+REPOSIITORY_NAME="docker-nginx"
+VERSION=""
+
+# help message
+for ARGUMENT in "$@"; do
+    if [ "$ARGUMENT" == "-h" ] || [ "$ARGUMENT" == "--help" ]; then
+        echo "usage: $(basename "$0") [ARGUMENT]"
+        echo "Builds the docker image from the Dockerfile." 
+        echo "ARGUMENT can be"
+        echo "--push push the build"
+        echo "--update-base only build if newer base image available."
+        exit
+    fi
+done
+
+# check dependencies
+for cmd in ${DEPENDENCIES[@]}; do
+    if [[ -z "$(command -v $cmd)" ]]; then
+        echo "$cmd is missing!"
+        exit 1
+    fi
+done
+
+# check arguments
+while [[ -n "$1" ]]; do
+    if [[ "$1" = "--update-base" ]]; then
+        UPDATE_BASE=true
+    elif [[ "$1" = "--push" ]]; then
+        BUILD_ARGUMENTS+=" --push"
+    else
+        echo "Unknown argument: \"$1\""
+        exit 1
+    fi
+    shift
+done
+
 BASE_IMAGE="$(tac Dockerfile | grep --max-count=1 "FROM" | cut -d" " -f2)"
 docker pull "$BASE_IMAGE"
 BASE_IMAGE_DATE="$(docker image inspect --format="{{ .Created }}" "$BASE_IMAGE" | cut -d "T" -f1)"
-echo "Base is $BASE_IMAGE from $BASE_IMAGE_DATE"
-export BASE_IMAGE BASE_IMAGE_DATE
-docker buildx bake -f docker-bake.hcl $@
+echo "Base image is $BASE_IMAGE from $BASE_IMAGE_DATE"
+IMAGE="madebytimo/${REPOSIITORY_NAME#docker-}"
+if [[ "$UPDATE_BASE" == true ]]; then
+    docker pull "$IMAGE"
+    PUSHED_IMAGE_DATE="$(docker image inspect --format="{{ .Created }}" "$IMAGE" | cut -d "T" -f1)"
+    echo "Last pushed image is from $PUSHED_IMAGE_DATE"
+    if [[ "$BASE_IMAGE_DATE" < "$PUSHED_IMAGE_DATE" ]]; then
+        echo "Used base image is up to date"
+        exit;
+    fi
+fi
+VERSION="$(cat Version.txt)"
+
+export BASE_IMAGE BASE_IMAGE_DATE IMAGE VERSION
+docker buildx bake --file docker-bake.hcl $BUILD_ARGUMENTS