use buildx/inline cache

Author: Jean-Louis Fuchs

.github/workflows/main.yml

@@ -0,0 +1,37 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - main
+  schedule:
+    - cron: "0 0 * * 0"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+      with:
+        buildkitd-flags: --debug
+
+    - name: Build container
+      uses: docker/build-push-action@v5
+      with:
+        context: compose
+        push: true
+        tags: ghcr.io/adfinis/pyaptly/cache:latest
+        cache-from: type=gha
+        cache-to: type=gha,mode=max

.github/workflows/pull-request.yml

@@ -0,0 +1,35 @@
+name: Tests
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+      with:
+        buildkitd-flags: --debug
+
+    - name: Build container
+      uses: docker/build-push-action@v5
+      with:
+        context: compose
+        push: false
+        tags: ghcr.io/adfinis/pyaptly/cache:latest
+        cache-from: type=gha
+        cache-to: type=gha,mode=max

.github/workflows/testing.yml

@@ -1,5 +1,10 @@
 .DEFAULT_GOAL := help
 
+CACHE_IMG = "ghcr.io/adfinis/pyaptly/cache:latest"
+
+DOCKER_BUILDKIT = 1
+export DOCKER_BUILDKIT
+
 # Help target extracts the double-hash comments from the targets and shows them
 # in a convenient way. This allows us to easily document the user-facing Make
 # targets
@@ -8,13 +13,12 @@ help:
 	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort -k 1,1 | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
 .PHONY: up
-up: ## start and build container if needed
-	#@docker pull ghcr.io/adfinis/pyaptly/cache:latest
-	@DOCKER_BUILDKIT=1 docker compose up -d --build
+up: ## start the container (cached)
+	@docker compose up -d --build
 
 .PHONY: push
 push: ## push docker build cache to registry
-	@docker push ghcr.io/adfinis/pyaptly/cache:latest
+	@docker push $(CACHE_IMG)
 
 .PHONY: down
 down: ## stop and remove container 

Makefile

@@ -1,5 +1,4 @@
-ARG DOCKER_IMAGE
-FROM $DOCKER_IMAGE
+FROM debian:bookworm-slim
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     python3-toml \
@@ -32,4 +31,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 ADD setup /setup
 RUN /setup/setup
 ADD run /setup/run
-ENTRYPOINT ["/usr/bin/tini", "--"]
+WORKDIR /source
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["bash", "/setup/run"]

compose/Dockerfile

@@ -4,12 +4,9 @@ services:
     image: ghcr.io/adfinis/pyaptly/cache:latest
     build:
       cache_from:
-        - ghcr.io/adfinis/pyaptly/cache:latest
+        - type=registry,ref=ghcr.io/adfinis/pyaptly/cache:latest
       context: compose
       args:
         BUILDKIT_INLINE_CACHE: 1
-        DOCKER_IMAGE: debian:bookworm-slim
-    working_dir: /source
-    command: ["bash", "/setup/run"]
     volumes:
       - ./:/source