Fixed branch on workflow

.github/workflows/docker-image.yml

@@ -1,44 +1,44 @@
 name: Docker Image CI
 
 on:
-    push:
-        branches: ["main"]
-    pull_request:
-        branches: ["main"]
+  push:
+    branches: ["master"]
+  pull_request:
+    branches: ["master"]
 
 env:
-    REGISTRY: ghcr.io
-    IMAGE_NAME: ${{ github.repository }}
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
 
 jobs:
-    push_to_registry:
-        name: Push Docker image to Docker Hub
-        runs-on: ubuntu-latest
-        permissions:
-            packages: write
-            contents: read
-        steps:
-            - name: Check out the repo
-              uses: actions/checkout@v4
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v4
 
-            - name: Docker Login
-              uses: docker/[email protected]
-              with:
-                  registry: ${{ env.REGISTRY }}
-                  username: ${{ github.actor }}
-                  password: ${{ secrets.GHCR_PASSWORD }}
+      - name: Docker Login
+        uses: docker/[email protected]
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GHCR_PASSWORD }}
 
-            - name: Extract metadata (tags, labels) for Docker
-              id: meta
-              uses: docker/metadata-action@v5
-              with:
-                  images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
-            - name: Build and push Docker image
-              uses: docker/build-push-action@v5
-              with:
-                  context: .
-                  file: ./dockerfile
-                  push: true
-                  tags: ${{ steps.meta.outputs.tags }}
-                  labels: ${{ steps.meta.outputs.labels }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}