feat: update docker and pipeline

- Add workflow to publish to GHCR
- Add workflow to build Docker image
- Add zap2xmlrc config example
- Update Dockerfile to run continuously

.github/workflows/release.yaml

@@ -0,0 +1,34 @@
+name: Release
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build-tag-release:
+    name: Build, tag, and release Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Setup release please
+        uses: google-github-actions/release-please-action@v2
+        id: release
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          release-type: simple
+          changelog-path: CHANGELOG.md
+          package-name: zap2xml
+      - name: Login into GitHub Container Registry
+        if: ${{ steps.release.outputs.release_created }}
+        run: echo ${{ secrets.CR_PAT }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
+      - name: Build Docker image
+        if: ${{ steps.release.outputs.release_created }}
+        run: |
+          docker build \
+          -t "ghcr.io/${GITHUB_REPOSITORY}:${{ steps.release.outputs.tag_name }}" \
+          -t "ghcr.io/${GITHUB_REPOSITORY}:latest" .
+      - name: Release Docker image
+        if: ${{ steps.release.outputs.release_created }}
+        run: |
+          docker push "ghcr.io/${GITHUB_REPOSITORY}:${{ steps.release.outputs.tag_name }}"
+          docker push "ghcr.io/${GITHUB_REPOSITORY}:latest"