build: added selfhost workflow

Author: jatinlodhi2002

.github/workflows/sparrowproxy-selfhost.yml

@@ -1,19 +1,21 @@
 name: Self-host Docker Image
 on:
-  push:
-    branches: [ main ]
   workflow_dispatch:
+    inputs:
+      image_version:
+        description: "Docker image version (e.g. 1.2.3)"
+        required: true
+        type: string
 
 permissions:
   contents: read
 
-env:
-  DOCKER_IMAGE_VERSION: ${{ vars.SELF_HOST_DOCKER_IMAGE_VERSION }}  
-
 jobs:
   build:
     runs-on: ubuntu-latest
     environment: self-host
+    env:
+      DOCKER_IMAGE_VERSION: ${{ inputs.image_version }}
 
     steps:
       - name: Checkout
@@ -33,9 +35,10 @@ jobs:
 
       - name: Build and push (multi-arch)
         run: |
+          echo "Building version: ${DOCKER_IMAGE_VERSION}" 
           docker buildx build \
             --platform linux/amd64,linux/arm64 \
             --build-arg GITHUB_TOKEN=${{ secrets.SPARROW_GITHUB_TOKEN }} \
             -t ssparrowapi/sparrow-proxy:self-host-${DOCKER_IMAGE_VERSION} \
             -t ssparrowapi/sparrow-proxy:latest \
-            --push .
+            --push .