refactor(docker): Roll our own push to GH package registry (#105)

The official GH Action for this gets worse and worse with every version,
and the old versions aren't properly supported any more.

cf. docker/build-push-action#208

This isn't actually that hard, and with a make rule for it we have the
option to build and push locally.

.github/workflows/deploy.yml

@@ -6,26 +6,9 @@ on:
       - 'v*.*.*'
 
 jobs:
-  ghpackages:
-
-    runs-on: ubuntu-20.04
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Push to GitHub Packages
-        uses: docker/build-push-action@v1
-        with:
-          username: ${{ github.actor }}
-          password: ${{ github.token }}
-          registry: docker.pkg.github.com
-          repository: sile-typesetter/casile/casile
-          tag_with_ref: true
-
-  ghrelease:
-
-    runs-on: ubuntu-20.04
 
+  ghpublish:
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -47,11 +30,20 @@ jobs:
           name: casile-${{ env.VERSION }}
           path: casile*-${{ env.VERSION }}.zip
       - name: Publish Release
-        uses: softprops/action-gh-release@v0.1.5
+        uses: softprops/action-gh-release@v1
         with:
           body_path: casile-${{ env.VERSION }}.md
           files: |
             casile-${{ env.VERSION }}.zip
             casile-${{ env.VERSION }}.tar.xz
         env:
           GITHUB_TOKEN: ${{ github.token }}
+      - name: Publish Docker Image to GH Pakcages
+        run: |
+          make docker-build-push
+        env:
+          DOCKER_REGISTRY: docker.pkg.github.com
+          DOCKER_REPO: $GITHUB_REPOSITORY/casile
+          DOCKER_TAG: ${{ env.VERSION }}
+          DOCKER_USERNAME: ${{ github.actor }}
+          DOCKER_PASSWORD: ${{ github.token }}

Makefile.am

@@ -209,6 +209,17 @@ casile-%.md: CHANGELOG.md
 	sed -e '/\.\.\.v$*/,/\.\.\.v/!d' $< | \
 		sed -e '1,3d;N;$$!P;$$!D;$$d' > $@
 
+export DOCKER_REGISTRY ?= docker.io
+export DOCKER_REPO ?= siletypesetter/$(_casile)
+export DOCKER_TAG ?= HEAD
+
 .PHONY: docker
 docker: Dockerfile hooks/build .version
-	IMAGE_NAME=siletypesetter/$(_casile):HEAD ./hooks/build $(VERSION)
+	./hooks/build $(VERSION)
+	docker tag $(DOCKER_REPO):$(DOCKER_TAG) $(DOCKER_REGISTRY)/$(DOCKER_REPO):$(DOCKER_TAG)
+
+
+.PHONY: docker-build-push
+docker-build-push: docker
+	docker login https://$(DOCKER_REGISTRY) -u $(DOCKER_USERNAME)
+	docker push $(DOCKER_REGISTRY)/$(DOCKER_REPO):$(DOCKER_TAG)

hooks/build

@@ -22,5 +22,5 @@ docker build \
 	--build-arg VCS_REF="${1:-$DESC}" \
 	--build-arg RUNTIME_DEPS="$RUNTIME_DEPS" \
 	--build-arg BUILD_DEPS="$BUILD_DEPS" \
-	--tag $IMAGE_NAME \
+	--tag $DOCKER_REPO:$DOCKER_TAG \
 	./