Update and rename .github/workflows/dockerimage.yml to dockerimage.yml

dockerimage.yml

@@ -0,0 +1,17 @@
+name: Docker Image CI
+
+on: [push]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: Build the Docker image
+        run: docker build -t docker.pkg.github.com/urbica/martin/martin:latest .
+      - name: Push the image to the GitHub Package Registry
+        run: |
+          docker login docker.pkg.github.com -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}
+          docker push docker.pkg.github.com/urbica/martin/martin:latest
+        if: github.ref == 'refs/heads/master'