Build image and use fixed image in action.yml

.github/workflows/build_docker.yml

@@ -0,0 +1,20 @@
+name: Build Image
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - run: docker build -t ghcr.io/taucher2003/gitlab-pipeline-action:${{ github.ref_name }} .
+      - run: echo ${{ secrets.GITHUB_TOKEN }} | docker login -u $ --password-stdin ghcr.io
+        name: Login to registry
+      - run: docker push ghcr.io/taucher2003/gitlab-pipeline-action:${{ github.ref_name }}

action.yml

@@ -15,4 +15,4 @@ inputs:
 author: 'Taucher2003'
 runs:
   using: 'docker'
-  image: 'Dockerfile'
+  image: 'ghcr.io/taucher2003/gitlab-pipeline-action:testing'