fix sanitize

Author: Its-J

.github/workflows/bootc.yaml

@@ -1,5 +1,8 @@
 name: Build bootc images
-
+permissions:
+  contents: read
+  packages: write
+  id-token: write
 on:
   schedule:
     - cron: "0 4 * * *" # every day at 4am UTC
@@ -18,7 +21,7 @@ jobs:
         arch: [x86_64, aarch64]
         variant:
           - name: nothing
-            image: ghcr.io/ultramarine-linux/shade/nothing:${{ github.ref_name || 'main' }}
+            image: ghcr.io/ultramarine-linux/shade/nothing
           # - name: cinnamon
           #   image: ghcr.io/ultramarine-linux/shade/cinnamon:${{ github.ref_name || 'main' }}
           # - name: sway
@@ -30,15 +33,16 @@ jobs:
       # set build platform for OCI
       BUILD_PLATFORM: ${{ contains(matrix.arch, 'aarch64') && 'linux/arm64' || 'linux/amd64' }}
       # IMAGE_TAG: "${{ matrix.variant.image }}-${{ matrix.arch }}"
+      TAG: "${{ github.ref_name || 'main' }}"
       BUILD_CONTEXT: "shades/${{ matrix.variant.name }}"
     steps:
       - name: Checkout
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Sanitize image tag
         run: |
-          IMAGE_TAG=$(echo "${{ matrix.variant.image }}-${{ matrix.arch }}" | tr '[:upper:]' '[:lower:]' | tr '/' '-')
-          echo "IMAGE_TAG=$IMAGE_TAG" >> $GITHUB_ENV
+          TAG=$(echo "${{ github.ref_name || 'main' }}-${{ matrix.arch }}" | tr '[:upper:]' '[:lower:]' | tr '/' '-')
+          echo "IMAGE_TAG=${{ matrix.variant.image }}:$IMAGE_TAG" >> $GITHUB_ENV
 
       - name: Login to GitHub Container Registry
         # if: github.event_name != 'pull_request'