Feature/add container image (#2)

* Removed chart release  workflow and added container build workflow

* Used GitHub Container Registry docker login

.github/workflows/release.yaml

@@ -0,0 +1,93 @@
+name: release
+
+on:
+  schedule:
+    - cron: '0 22 * * 0' # every sunday at 10pm
+  push:
+    branches:
+      - 'main'
+    tags:
+      - 'v?[0-9]+.[0-9]+.[0-9]+*'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Check out repository
+        uses: actions/checkout@v2
+      -
+        name: Set build variables
+        id: env
+        run: |
+          REGISTRY=ghcr.io/
+          IMAGE=zeiss/ca-injector
+          VERSION=noop
+          if [ "${{ github.event_name }}" = "schedule" ]; then
+            VERSION=edge
+          elif [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/}
+          elif [[ $GITHUB_REF == refs/heads/* ]]; then
+            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
+            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
+              VERSION=edge
+            fi
+          elif [[ $GITHUB_REF == refs/pull/* ]]; then
+            VERSION=pr-${{ github.event.number }}
+          fi
+          TAGS="${REGISTRY}${IMAGE}:${VERSION}"
+          if [[ $VERSION =~ ^v?[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            VERSION_STRIP=${VERSION#v}
+            MINOR=${VERSION_STRIP%.*}
+            MAJOR=${MINOR%.*}
+            TAGS="$TAGS,${REGISTRY}${IMAGE}:${MINOR},${REGISTRY}${IMAGE}:${MAJOR},${REGISTRY}${IMAGE}:latest"
+          # elif [ "${{ github.event_name }}" = "push" ]; then
+          #   TAGS="$TAGS,${REGISTRY}${IMAGE}:sha-${GITHUB_SHA::8}"
+          fi
+          echo ::set-output name=version::${VERSION}
+          echo ::set-output name=tags::${TAGS}
+          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          config-inline: |
+            [worker.oci]
+              max-parallelism = 4
+      -
+        name: Check out Docker Buildx cache
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+      -
+        name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      -
+        name: Build and push image
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm64,linux/386,linux/arm/v7
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.env.outputs.tags }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache
+          labels: |
+            org.opencontainers.image.created=${{ steps.env.outputs.created }}
+            org.opencontainers.image.source=https://github.com/${{ github.repository }}
+            org.opencontainers.image.version=${{ steps.env.outputs.version }}
+            org.opencontainers.image.revision=${{ github.sha }}
+            org.opencontainers.image.licenses=${{ github.event.repository.license.name }}