git checkout

.github/workflows/build-docker.yml

@@ -19,12 +19,14 @@ jobs:
     container:
       image: docker:27.4.0-rc.2-dind-alpine3.20
     steps:
+      - name: Install git
+        run: apk add --no-cache git
       - name: Clone Repository
-        run: git clone https://wf:${{ github.token }}@{{ github.server_url }}/{{ github.repository_owner }}/{{ github.repository }}.git 
+        run: git clone https://wf:${{ github.token }}@{{ github.server_url#https:// }}/{{ github.repository_owner }}/{{ github.repository }}.git {{ github.workspace }}
       - name: Check Out Branch
         run: |
-          cd <repo>
-          git checkout <branch-name>
+          cd ${{ github.workspace }}
+          git checkout ${{ github.ref }}
       - name: Build Docker Container
         run: |
           docker build -t ${{ inputs.tag }} ${{ inputs.source }}

Dockerfile

@@ -0,0 +1,3 @@
+FROM alpine
+
+RUN echo "Hello, World!" > /hello.txt