fix(ci): correct casing for ghcr

.github/workflows/ci.yml

@@ -70,9 +70,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Get short SHA
-        id: sha
-        run: echo "value=${GITHUB_SHA:0:7}" >> $GITHUB_OUTPUT
+      - name: Get short SHA and lowercase repo
+        id: meta
+        run: |
+          echo "sha=${GITHUB_SHA:0:7}" >> $GITHUB_OUTPUT
+          echo "repo=${GITHUB_REPOSITORY,,}" >> $GITHUB_OUTPUT
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -91,7 +93,7 @@ jobs:
           file: ./docker/selfhosted.Dockerfile
           platforms: linux/amd64
           push: true
-          tags: ghcr.io/${{ github.repository }}:pr-${{ github.event.pull_request.number }}-${{ steps.sha.outputs.value }}
+          tags: ghcr.io/${{ steps.meta.outputs.repo }}:pr-${{ github.event.pull_request.number }}-${{ steps.meta.outputs.sha }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
@@ -110,9 +112,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Get version from version.txt
-        id: version
-        run: echo "value=$(cat version.txt)" >> $GITHUB_OUTPUT
+      - name: Get version and lowercase repo
+        id: meta
+        run: |
+          echo "version=$(cat version.txt)" >> $GITHUB_OUTPUT
+          echo "repo=${GITHUB_REPOSITORY,,}" >> $GITHUB_OUTPUT
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -131,6 +135,6 @@ jobs:
           file: ./docker/selfhosted.Dockerfile
           platforms: linux/amd64
           push: true
-          tags: ghcr.io/${{ github.repository }}:rc-${{ steps.version.outputs.value }}-${{ github.run_number }}
+          tags: ghcr.io/${{ steps.meta.outputs.repo }}:rc-${{ steps.meta.outputs.version }}-${{ github.run_number }}
           cache-from: type=gha
           cache-to: type=gha,mode=max