first trial pushing docker image to github container

Author: msarkis-icr

.github/workflows/docker-publish.yml

@@ -0,0 +1,34 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main  # or any branch you deploy from
+      - fix_issue_GHCR
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write  # required for GHCR
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build Docker image
+        run: |
+          docker build -t ghcr.io/${{ github.repository_owner }}/nextflow-app:latest .
+
+      - name: Push Docker image
+        run: |
+          docker push ghcr.io/${{ github.repository_owner }}/nextflow-app:latest
+