Add GitHub workflows

.github/workflows/ghrc-publish.yml

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+name: GHCR Publish
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "**" ]
+    # Publish semver tags as releases.
+    tags: [ 'v*' ]
+  #schedule:
+  #  - cron: '30 15 * * *'
+  #pull_request:
+  #  branches: [ main ]
+
+env:
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: ${{ github.repository }}
+  REGISTRY: "ghcr.io"
+
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      # This is used to complete the identity challenge
+      # with sigstore/fulcio when running outside of PRs.
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      # # Install the cosign tool except on PR
+      # # https://github.com/sigstore/cosign-installer
+      # - name: Install cosign
+      #   if: github.event_name != 'pull_request'
+      #   uses: sigstore/cosign-installer@1e95c1de343b5b0c23352d6417ee3e48d5bcd422
+      #   with:
+      #     cosign-release: 'v1.4.0'
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Login against a Docker registry except on PR
+      # https://github.com/docker/login-action
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            "type=raw,value={{date 'X'}}_{{tag}}{{branch}}_{{sha}}"
+            "type=raw,value=latest"
+            "type=ref,event=tag"
+            "type=semver,pattern=v{{major}}"
+            "type=ref,event=branch"
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@v3
+        with:
+          #context: "{{defaultContext}}:jiracmdline"
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}