Add GHA for dockerhub builds

.github/workflows/docker.yml

@@ -25,3 +25,58 @@ jobs:
       run: |
         make docker-build
         make docker-push
+
+  push-dockerhub:
+    env:
+      DOCKER_REGISTRY: "docker.io/"
+      DOCKER_REPOSITORY: "omecproject/"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2.4.0
+
+      - run: echo GIT_SHA_SHORT=$(git rev-parse --short HEAD) >> $GITHUB_ENV
+
+      - id: docker-login
+        # Secrets from the main repo are not used if PR comes from fork. We skip pushing Docker image then.
+        if: github.event.pull_request.head.repo.full_name == github.repository && github.actor != 'dependabot[bot]'
+        uses: docker/login-action@v1.13.0
+        with:
+          registry: docker.io
+          username: ${{ secrets.DOCKERHUB_LOGIN }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Build and push "master-latest" Docker images for Haswell CPU
+        env:
+          DOCKER_TAG: master-latest
+          CPU: haswell
+        run: |
+          docker pull ${DOCKER_REPOSITORY}upf-epc-bess:$DOCKER_TAG
+          docker pull ${DOCKER_REPOSITORY}upf-epc-pfcpiface:$DOCKER_TAG
+          CPU=$CPU make docker-build
+          make docker-push
+
+      - name: Build and push "master-GIT_SHA" Docker images for Haswell CPU
+        env:
+          DOCKER_TAG: master-latest-${{ env.GIT_SHA_SHORT }}
+          CPU: haswell
+        run: |
+          CPU=$CPU make docker-build
+          make docker-push
+
+      - name: Build and push "master-latest-ivybridge" Docker images for Ivybridge CPU
+        env:
+          DOCKER_TAG: master-latest-ivybridge
+          CPU: ivybridge
+        run: |
+          docker pull ${DOCKER_REPOSITORY}upf-epc-bess:$DOCKER_TAG
+          docker pull ${DOCKER_REPOSITORY}upf-epc-pfcpiface:$DOCKER_TAG
+          CPU=$CPU make docker-build
+          make docker-push
+
+      - name: Build and push "master-GIT_SHA-ivybridge" Docker images for Ivybridge CPU
+        env:
+          DOCKER_TAG: master-latest-ivybridge-${{ env.GIT_SHA_SHORT }}
+          CPU: ivybridge
+        run: |
+          CPU=$CPU make docker-build
+          make docker-push

Makefile

@@ -37,8 +37,13 @@ PTF_PB_DIR ?= ptf/lib
 # https://docs.docker.com/engine/reference/commandline/build/#specifying-target-build-stage---target
 docker-build:
 	for target in $(DOCKER_TARGETS); do \
+		DOCKER_CACHE_ARG=""; \
+		if [ $(DOCKER_BUILDKIT) = 1 ]; then \
+			DOCKER_CACHE_ARG="--cache-from ${DOCKER_REGISTRY}${DOCKER_REPOSITORY}upf-epc-$$target:${DOCKER_TAG}"; \
+		fi; \
 		DOCKER_BUILDKIT=$(DOCKER_BUILDKIT) docker build $(DOCKER_PULL) $(DOCKER_BUILD_ARGS) \
 			--target $$target \
+			$$DOCKER_CACHE_ARG \
 			--tag ${DOCKER_REGISTRY}${DOCKER_REPOSITORY}upf-epc-$$target:${DOCKER_TAG} \
 			--label org.opencontainers.image.source="https://github.com/omec-project/upf-epc" \
 			--label org.label.schema.version="${VERSION}" \