Improve GH workflow

Author: networkfusion

.devcontainer/FreeRTOS-NXP/Dockerfile.FreeRTOS-NXP

@@ -1,3 +1,3 @@
 FROM ghcr.io/nanoframework/dev-container-freertos-nxp:v1.01
-LABEL website="nanoframework.net"
-LABEL desc="This is dockerfile image for NXP targets"
+LABEL org.website="https://nanoframework.net/"
+LABEL description="This is dockerfile image for NXP targets"

.github/workflows/devcontainer-freertos-nxp.yaml

@@ -1,9 +1,11 @@
 # Copyright (c) .NET Foundation and Contributors
 # See LICENSE file in the project root for full license information.
 
-name: Push devcontainer Docker image [FreeRTOS-NXP]
+name: Push Docker image [FreeRTOS-NXP]
 
 env:
+  CONTAINER_REPO: ghcr.io
+  CONTAINER_NAME: dev-container-freertos-nxp
   CONTAINER_SOURCE_FILE: .devcontainer/FreeRTOS-NXP/Dockerfile.FreeRTOS-NXP.SRC
   CONTAINER_VERSION_FILE: .devcontainer/FreeRTOS-NXP/Dockerfile.FreeRTOS-NXP
 
@@ -28,17 +30,22 @@ jobs:
     - name: Checkout Repository
       uses: actions/checkout@v4
 
-    - name: Extract metadata (tags, labels) for Docker
-      id: meta
-      uses: docker/metadata-action@v5
-      with:
-        images: ${{env.CONTAINER_VERSION_FILE}}
+    - name: Get container version
+      shell: pwsh
+      run: |
+        $dockerfileContent = Get-Content("${{ env.CONTAINER_VERSION_FILE }}")
+        $dockerfileContent -match '(?<=\:)(?:[v]\d+.\d+)'
+        $containerVersion = $Matches[0].ToString()
+        echo "GCR_VERSION=$containerVersion" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
 
     - name: Login to GitHub Container Registry
       if: ${{ github.event_name != 'pull_request' }}
       uses: docker/login-action@v3
       with:
-        registry: ghcr.io
+        registry: ${{ env.CONTAINER_REPO }}
         username: ${{ github.repository_owner }}
         password: ${{ secrets.GITHUB_TOKEN }}
 
@@ -47,5 +54,6 @@ jobs:
       with:
         file: ${{ env.CONTAINER_SOURCE_FILE }}
         push: ${{ github.event_name != 'pull_request' }}
-        tags: ${{ steps.meta.outputs.tags }}
-        labels: ${{ steps.meta.outputs.labels }}
+        tags: |
+          ${{ env.CONTAINER_REPO }}/${{ github.repository_owner }}/${{ env.CONTAINER_NAME }}:${{ env.GCR_VERSION }}
+          ${{ env.CONTAINER_REPO }}/${{ github.repository_owner }}/${{ env.CONTAINER_NAME }}:latest