ci: update Docker CI workflows to exclude tags for socket-proxy and improve caching

.github/workflows/docker-image-socket-proxy.yml

@@ -2,8 +2,16 @@ name: Docker Image CI (socket-proxy)
 
 on:
   push:
+    branches:
+      - main
     paths:
       - "socket-proxy/**"
+    tags-ignore:
+      - '**'
+  workflow_dispatch:
+
+permissions:
+  contents: read
 
 jobs:
   build:

.github/workflows/docker-image.yml

@@ -84,10 +84,10 @@ jobs:
           outputs: type=image,name=${{ env.REGISTRY }}/${{ inputs.image_name }},push-by-digest=true,name-canonical=true,push=true
           cache-from: |
             type=registry,ref=${{ env.REGISTRY }}/${{ inputs.image_name }}:buildcache-${{ env.PLATFORM_PAIR }}
-            type=gha,scope=${{ github.workflow }}
+            type=gha,scope=${{ github.workflow }}-${{ env.PLATFORM_PAIR }}
           cache-to: |
             type=registry,ref=${{ env.REGISTRY }}/${{ inputs.image_name }}:buildcache-${{ env.PLATFORM_PAIR }},mode=max
-            type=gha,scope=${{ github.workflow }},mode=max
+            type=gha,scope=${{ github.workflow }}-${{ env.PLATFORM_PAIR }},mode=max
           build-args: |
             VERSION=${{ github.ref_name }}
             MAKE_ARGS=${{ env.MAKE_ARGS }}