Attempt to fix build pipeline

.github/workflows/build_and_publish.yml

@@ -1,12 +1,14 @@
-name: Build & Push AMD Strix Halo Toolboxes
+# File: .github/workflows/build_and_publish.yml
+name: Build & Publish AMD Strix Halo Toolboxes
 
 on:
   workflow_dispatch:
     inputs:
       backends:
-        description: |
-          Comma-separated list of backends to build (e.g. "rocm-7beta,rocm-7rc").
-          Use "all" to build everything.
+        description: >
+          Comma-separated list of backends to build
+          (e.g. "rocm-7beta,rocm-7rc").  
+          Use `all` to build everything.
         required: false
         default: all
 
@@ -20,20 +22,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # if inputs.backends == "all", expand to the full list
-        # otherwise split the comma list into an array
-        backend: ${{ fromJSON(
-          github.event.inputs.backends == 'all'
+        backend: ${{ fromJson(
+          inputs.backends == 'all'
             ? '["rocm-6.4.2","rocm-7beta","rocm-7rc","vulkan-amdvlk","vulkan-radv"]'
             : format(
-                '[\"{}\"]',
-                replace(github.event.inputs.backends, ',', '\",\"')
+                '[\"{0}\"]',
+                replace(inputs.backends, ',', '\",\"')
               )
         ) }}
 
     steps:
-      - name: Check out repository
-        uses: actions/checkout@v3
+      - uses: actions/checkout@v3
 
       - name: Log in to Docker Hub
         uses: docker/login-action@v2
@@ -49,20 +48,20 @@ jobs:
         run: |
           set -euo pipefail
 
-          BACKEND="${{ matrix.backend }}"
-          DF="Dockerfile.${BACKEND}"
-          LOCAL_IMAGE="${LOCAL_PREFIX}-${BACKEND}"
-          BUILD_TAG="${BACKEND}_${BUILD_TS}"
-          IMMUTABLE_REF="${DOCKERHUB_REPO}:${BUILD_TAG}"
-          CHANNEL_REF="${DOCKERHUB_REPO}:${BACKEND}"
+          B="${{ matrix.backend }}"
+          DF="Dockerfile.$B"
+          LI="${LOCAL_PREFIX}-$B"
+          TAG="${B}_${BUILD_TS}"
+          IMM="${DOCKERHUB_REPO}:$TAG"
+          CHAN="${DOCKERHUB_REPO}:$B"
 
-          echo "→ Building ${DF}"
-          docker build --no-cache -t "${LOCAL_IMAGE}" -f "${DF}" .
+          echo "→ Building $DF"
+          docker build --no-cache -t "$LI" -f "$DF" .
 
-          echo "→ Tag & push immutable → ${IMMUTABLE_REF}"
-          docker tag "${LOCAL_IMAGE}" "${IMMUTABLE_REF}"
-          docker push "${IMMUTABLE_REF}"
+          echo "→ Pushing immutable → $IMM"
+          docker tag "$LI" "$IMM"
+          docker push "$IMM"
 
-          echo "→ Tag & push channel → ${CHANNEL_REF}"
-          docker tag "${IMMUTABLE_REF}" "${CHANNEL_REF}"
-          docker push "${CHANNEL_REF}"
+          echo "→ Updating channel → $CHAN"
+          docker tag "$IMM" "$CHAN"
+          docker push "$CHAN"