Docker releases to GitHub Docker registry

This will release docker container to GitHub docker registry.

.github/workflows/docker.yaml

@@ -0,0 +1,50 @@
+name: Docker
+on:
+  push:
+    branches:
+      - main
+    # Publish `v1.2.3` tags as releases.
+    tags:
+      - v*
+  # Run tests for any PRs.
+  pull_request:
+env:
+  IMAGE_NAME: scorecard
+
+jobs:
+  # Push image to GitHub Packages.
+  push:
+
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build image
+        run: docker build . --file Dockerfile --tag $IMAGE_NAME
+
+      - name: Log into registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
+
+      - name: Push image
+        run: |
+          IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME
+
+          # Change all uppercase to lowercase
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+
+          # Strip git ref prefix from version
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+
+          # Strip "v" prefix from tag name
+          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+
+          # Use Docker `latest` tag convention
+          [ "$VERSION" == "$default-branch" ] && VERSION=latest
+
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION

Dockerfile

@@ -14,18 +14,17 @@
 
 # syntax = docker/dockerfile:1-experimental
 
-FROM --platform=${BUILDPLATFORM} golang:1.15 as base
+FROM  golang:1.15 as base
 WORKDIR /src
 ENV CGO_ENABLED=0
-COPY go.* .
+COPY go.* ./
 RUN go mod download
-COPY . .
+COPY . ./
 
 FROM base AS build
 ARG TARGETOS
 ARG TARGETARCH
-RUN --mount=type=cache,target=/root/.cache/go-build \
-  GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o /out/scorecard .
+RUN --mount=type=cache,target=/root/.cache/go-build  go build -o /out/scorecard .
 
 FROM gcr.io/distroless/base:nonroot
 COPY --from=build /out/scorecard /