fully unwind & parallelize loop

.github/workflows/build-images.yml

@@ -1,4 +1,4 @@
-name: Deploy multi-architecture Docker images for privatebin with buildx
+name: Build & Deploy container image
 
 on:
   schedule:
@@ -15,8 +15,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        image: [stable, edge]
-    name: Build images based on ${{ matrix.image }} Alpine release
+        base-image: [stable, edge]
+        destination-image: [nginx-fpm-alpine, fs, pdo, gcs]
+    name: ${{ matrix.destination-image }} image / ${{ matrix.base-image }} release
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -32,4 +33,4 @@ jobs:
         env:
           DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
           DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
-        run: ./buildx.sh ${{ github.event_name }} ${{ matrix.image }}
+        run: ./buildx.sh ${{ github.event_name }} ${{ matrix.destination-image }} ${{ matrix.base-image }}

buildx.sh

@@ -5,8 +5,9 @@
 set -euxo pipefail
 
 EVENT=$1
+IMAGE=$2
 EDGE=false
-[ "$2" = edge ] && EDGE=true
+[ "$3" = edge ] && EDGE=true
 
 build_image() {
     local PUSH
@@ -29,15 +30,6 @@ docker_login() {
         --password-stdin
 }
 
-image_build_arguments() {
-    cat<<!
-privatebin/fs  --build-arg ALPINE_PACKAGES= --build-arg COMPOSER_PACKAGES=
-privatebin/pdo --build-arg ALPINE_PACKAGES=php8-pdo_mysql,php8-pdo_pgsql --build-arg COMPOSER_PACKAGES=
-privatebin/gcs --build-arg ALPINE_PACKAGES=php8-openssl
-privatebin/nginx-fpm-alpine
-!
-}
-
 is_image_push_required() {
     [ "$EVENT" != pull_request ] && { \
         [ "$GITHUB_REF" != refs/heads/master ] || \
@@ -46,7 +38,7 @@ is_image_push_required() {
 }
 
 main() {
-    local PUSH TAG IMAGE BUILD_ARGS
+    local PUSH TAG BUILD_ARGS
 
     if [ "$EVENT" = schedule ] ; then
         TAG=nightly
@@ -61,16 +53,28 @@ main() {
         PUSH=false
     fi
 
-    if [ "$EDGE" = true ] ; then
+    case "$IMAGE" in
+        fs)
+            BUILD_ARGS="--build-arg ALPINE_PACKAGES= --build-arg COMPOSER_PACKAGES="
+            ;;
+        pdo)
+            BUILD_ARGS="--build-arg ALPINE_PACKAGES=php8-pdo_mysql,php8-pdo_pgsql --build-arg COMPOSER_PACKAGES="
+            ;;
+        gcs)
+            BUILD_ARGS="--build-arg ALPINE_PACKAGES=php8-openssl"
+            ;;
+        *)
+            BUILD_ARGS=""
+            ;;
+    esac
+    IMAGE="privatebin/$IMAGE"
+
+    if [ "$EDGE" = false ] ; then
+        build_image $PUSH --tag "$IMAGE:latest" --tag "$IMAGE:$TAG" --tag "${IMAGE}:${TAG%%-*}" "$BUILD_ARGS"
+    else
         sed -e 's/^FROM alpine:.*$/FROM alpine:edge/' Dockerfile > Dockerfile.edge
+        build_image $PUSH -f Dockerfile.edge    --tag "$IMAGE:edge" "$BUILD_ARGS"
     fi
-    image_build_arguments | while read -r IMAGE BUILD_ARGS ; do
-        if [ "$EDGE" = false ] ; then
-            build_image $PUSH --tag "$IMAGE:latest" --tag "$IMAGE:$TAG" --tag "${IMAGE}:${TAG%%-*}" "$BUILD_ARGS"
-        else
-            build_image $PUSH -f Dockerfile.edge    --tag "$IMAGE:edge" "$BUILD_ARGS"
-        fi
-    done
 
     rm -f Dockerfile.edge "$HOME/.docker/config.json"
 }