[docker] Add docker image build

.github/workflows/build.yml

@@ -207,3 +207,39 @@ jobs:
           TWINE_PASSWORD: ${{ secrets.PYPI }}
         run: |
           twine upload src/pymod/dist/*
+
+  build_and_push_docker_multiarch:
+    name: Build and push multiarch docker image
+    if: github.repository == 'manugarg/pacparser' && (github.ref == 'refs/heads/master' || startswith(github.ref, 'refs/heads/docker') || startsWith(github.ref, 'refs/tags/v'))
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code into the Go module directory
+        if: ${{ !contains(github.event_name, 'workflow_dispatch') }}
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Check out code into the Go module directory
+        if: ${{ contains(github.event_name, 'workflow_dispatch') }}
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          ref: ${{ github.event.inputs.tag }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to GHCR
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push release Docker Image (main-ghcr)
+        run: make docker_multiarch DOCKER_IMAGE=ghcr.io/manugarg/pacparser
+

Dockerfile

@@ -0,0 +1,22 @@
+# Use Alpine Linux as the base image
+FROM alpine:latest as build-stage
+
+# Install build dependencies
+RUN apk update && apk add --no-cache \
+    gcc \
+    git \
+    g++ \
+    bash \
+    make
+
+WORKDIR /build
+COPY src /build
+RUN make pactester
+
+# Final stage
+FROM alpine:latest
+
+WORKDIR /app
+COPY --from=build-stage /build/pactester /app/
+
+CMD /app/pactester

src/Makefile

@@ -30,6 +30,14 @@ endif
 
 VERSION ?= $(shell git describe --always --tags --candidate=100)
 
+GIT_TAG := $(shell git describe --exact-match --exclude tip --tags HEAD 2>/dev/null || /bin/true)
+DOCKER_IMAGE ?= manugarg/cloudprober
+ifeq "$(GIT_TAG)" ""
+	DOCKER_TAGS := -t $(DOCKER_IMAGE):master -t $(DOCKER_IMAGE):main
+else
+	DOCKER_TAGS := -t $(DOCKER_IMAGE):$(GIT_TAG) -t $(DOCKER_IMAGE):latest
+endif
+
 OS_ARCH := $(subst /,_,$(shell uname -s | sed /\ /s//_/))
 
 LIBRARY_NAME = libpacparser
@@ -155,6 +163,14 @@ pymod-dist: pacparser.o pacparser.h spidermonkey/libjs.a
 install-pymod: pymod
 	cd pymod && ARCHFLAGS="" $(PYTHON) setup.py install --root="$(DESTDIR)/" $(EXTRA_ARGS)
 
+docker_multiarch: pactester Dockerfile
+	docker buildx build --push \
+		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
+		--build-arg VERSION=$(VERSION) \
+		--build-arg VCS_REF=$(GIT_COMMIT) \
+		--platform linux/amd64,linux/arm64,linux/arm/v7 \
+		$(DOCKER_TAGS) .
+
 clean:
 	rm -f $(LIBRARY_LINK) $(LIBRARY) pacparser.o pactester pymod/pacparser_o_buildstamp jsapi_buildstamp
 	rm -rf dist