CI to build docker image

.github/workflows/build.yml

@@ -0,0 +1,72 @@
+name: Build images
+
+on:
+  pull_request:
+    types: [opened, reopened]
+  push:
+    branches:
+      - '**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    permissions:
+      packages: write
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            ghcr.io/${{ github.repository_owner  }}/herald
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=sha        
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=registry,ref=ghcr.io/${{ github.repository_owner  }}/herald:buildcache
+          cache-to: type=registry,ref=ghcr.io/${{ github.repository_owner  }}/herald:buildcache,mode=max
+
+  # deploy:
+    # runs-on: ubuntu-latest
+    # if: github.ref == 'refs/heads/main'
+    # needs:
+      # - build
+    # env:
+      # SERVER: https://api.paas.okd.cern.ch
+      # PROJECT: herald
+      # APP_NAME: herald
+    # steps:
+      # - name: Trigger redeploy
+        # run: >
+          # which sshpass
+          # && sshpass -p ${{ secrets.PWD }} ssh -o StrictHostKeyChecking=no ${{ secrets.USER }}@lxplus9.cern.ch 
+          # 'oc login ${{ env.SERVER }} --token=${{ secrets.DEPLOY_TOKEN }}
+          # && oc project ${{ env.PROJECT }}
+          # && oc import-image ${{ env.APP_NAME }} --all'