fix yaml lint

.github/workflows/docker-image.yml

@@ -2,9 +2,9 @@ name: Docker Image CI
 
 on:
   push:
-    branches: [ "master" ]
+    branches: ["master"]
   pull_request:
-    branches: [ "master" ]
+    branches: ["master"]
 
 jobs:
 
@@ -13,6 +13,6 @@ jobs:
     runs-on: ubuntu-latest
     name: Build Docker image
     steps:
-    - uses: actions/checkout@v4
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
+      - uses: actions/checkout@v4
+      - name: Build the Docker image
+        run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)