Build docker image for each PR (#300)

This builds a docker image for each PR and then one for the release
tagged as :latest.

.github/workflows/docker-build-push.yml

@@ -1,9 +1,7 @@
 name: Create and publish a Docker image
 
 on:
-  push:
-    branches:
-      - main
+  workflow_call:
 
 env:
   REGISTRY: ghcr.io
@@ -26,20 +24,33 @@ jobs:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Figure out branch name
+        shell: bash
+        run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
+        id: extract_branch
+      - name: Determine docker image tag
+        shell: bash
+        id: determine_tag
+        run: |
+          if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
+            echo "tag=latest" >> $GITHUB_OUTPUT
+          else
+            echo "tag=${{ steps.extract_branch.outputs.branch }}" >> $GITHUB_OUTPUT
+          fi
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-          tags: |
-            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
-
+      # Buildx for caching
+      - uses: docker/setup-buildx-action@v3
       - name: Build and push Docker image
-        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        uses: docker/build-push-action@v5
         with:
           context: .
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.determine_tag.outputs.tag }}
           labels: ${{ steps.meta.outputs.labels }}
-
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/release-book-website.yml

@@ -1,10 +1,18 @@
-name: Release the website
+name: Release the book and website
+
 on:
   push:
     branches:
       - main
+env:
+  IMAGE: ghcr.io/${{ github.repository }}:latest
+
 jobs:
-  build_and_release:
+  build-and-push-image:
+    uses: ./.github/workflows/docker-build-push.yml
+
+  release-book-website:
+    needs: build-and-push-image
     runs-on: ubuntu-latest
     steps:
       - name: Set up git repository
@@ -12,7 +20,7 @@ jobs:
       - name: Print dependency versions
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book
@@ -20,7 +28,7 @@ jobs:
       - name: Print build variables
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book
@@ -28,7 +36,23 @@ jobs:
       - name: Bake the book
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
+          options: -v ${{ github.workspace }}:/app
+          run: |
+            cd /app/book
+            make -j bake
+      - name: Release baked book to S3
+        uses: shallwefootball/s3-upload-action@master
+        with:
+          aws_key_id: ${{ secrets.AWS_KEY_ID }}
+          aws_secret_access_key: ${{ secrets.AWS_SECRET_ACCESS_KEY}}
+          aws_bucket: ${{ secrets.AWS_BUCKET_BOOK }}
+          source_dir: book/release
+          destination_dir: release
+      - name: Bake the website
+        uses: addnab/docker-run-action@v3
+        with:
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book
@@ -41,6 +65,18 @@ jobs:
           aws_bucket: ${{ secrets.AWS_BUCKET_WEBSITE }}
           source_dir: website/static_website_html
           destination_dir: static_html_root
+  invalidate-book-website-cache:
+    needs: release-book-website
+    runs-on: ubuntu-latest
+    steps:
+      - name: Invalidate Cloudfront book cache
+        uses: chetan/invalidate-cloudfront-action@v2
+        env:
+          DISTRIBUTION: ${{ secrets.CLOUDFRONT_DISTRIBUTION_BOOK }}
+          PATHS: "/*"
+          AWS_REGION: "us-east-1"
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
       - name: Invalidate Cloudfront website cache
         uses: chetan/invalidate-cloudfront-action@v2
         env:

.github/workflows/release-book.yml

@@ -1,51 +0,0 @@
-name: Release the book
-on:
-  push:
-    branches:
-      - main
-jobs:
-  build_and_release:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up git repository
-        uses: actions/checkout@v3
-      - name: Print dependency versions
-        uses: addnab/docker-run-action@v3
-        with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
-          options: -v ${{ github.workspace }}:/app
-          run: |
-            cd /app/book
-            make show_tools_version
-      - name: Print build variables
-        uses: addnab/docker-run-action@v3
-        with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
-          options: -v ${{ github.workspace }}:/app
-          run: |
-            cd /app/book
-            make printvars
-      - name: Bake the book
-        uses: addnab/docker-run-action@v3
-        with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
-          options: -v ${{ github.workspace }}:/app
-          run: |
-            cd /app/book
-            make -j bake
-      - name: Release baked book to S3
-        uses: shallwefootball/s3-upload-action@master
-        with:
-          aws_key_id: ${{ secrets.AWS_KEY_ID }}
-          aws_secret_access_key: ${{ secrets.AWS_SECRET_ACCESS_KEY}}
-          aws_bucket: ${{ secrets.AWS_BUCKET_BOOK }}
-          source_dir: book/release
-          destination_dir: release
-      - name: Invalidate Cloudfront book cache
-        uses: chetan/invalidate-cloudfront-action@v2
-        env:
-          DISTRIBUTION: ${{ secrets.CLOUDFRONT_DISTRIBUTION_BOOK }}
-          PATHS: "/*"
-          AWS_REGION: "us-east-1"
-          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_KEY_ID }}
-          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}

.github/workflows/test-book-website.yml

@@ -1,13 +1,17 @@
-name: Validate LaTeX Document
+name: Test building book and website
+
 on:
-  push:
-    branches:
-      - '**'  # All branches
-      - '!main' # But main as will do it anyway and more in release_book
   pull_request:
 
+env:
+  IMAGE: ghcr.io/${{ github.repository }}:${{ github.event.pull_request.head.ref }}
+
 jobs:
-  test_building_book:
+  build-and-push-image:
+    uses: ./.github/workflows/docker-build-push.yml
+
+  test-building-book-website:
+    needs: build-and-push-image
     runs-on: ubuntu-latest
     steps:
       - name: Set up git repository
@@ -15,7 +19,7 @@ jobs:
       - name: Print dependency versions
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book
@@ -23,7 +27,7 @@ jobs:
       - name: Print build variables
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book
@@ -31,7 +35,7 @@ jobs:
       - name: Test baking the release versions
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book
@@ -39,7 +43,7 @@ jobs:
       - name: Test building website
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/hendricius/the-sourdough-framework:latest
+          image: ${{ env.IMAGE }}
           options: -v ${{ github.workspace }}:/app
           run: |
             cd /app/book