fix: add missing environment variables to smoke tests and fix image naming

1. Add missing MANAGED_DIMENSIONS_GRAPH environment variable to api-smoke.sh
   This variable is required by the API to start properly

2. Add missing AUTH_ISSUER environment variable to app-smoke.sh
   This variable is required by the app's nginx configuration script

3. Convert repository owner to lowercase in docker-build.yaml workflow
   Docker image names must be lowercase. The repository_owner variable
   contains "SwissFederalArchives" which causes "invalid reference format"
   errors when tagging images. Convert to lowercase using tr command.

These fixes resolve the smoke test failures for all three components:
- API: Missing environment variable MANAGED_DIMENSIONS_GRAPH
- App: Missing environment variable AUTH_ISSUER
- CLI: Invalid image reference format due to uppercase repository name

Author: rareba

.github/workflows/docker-build.yaml

@@ -111,7 +111,8 @@ jobs:
           COMPONENT="${{ matrix.component }}"
           VERSION="${{ steps.version.outputs.version }}"
           ENV="${{ needs.prepare.outputs.environment }}"
-          IMAGE="ghcr.io/${{ github.repository_owner }}/lindas-cube-creator-${COMPONENT}"
+          REPO_OWNER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
+          IMAGE="ghcr.io/${REPO_OWNER}/lindas-cube-creator-${COMPONENT}"
 
           # Save current latest as previous (for rollback)
           echo "old_latest_tag=${IMAGE}:${ENV}-latest" >> $GITHUB_OUTPUT

smoke-tests/api-smoke.sh

@@ -11,6 +11,7 @@ CONTAINER_ID=$(docker run -d \
   -e SPARQL_ENDPOINT=http://example.com/sparql \
   -e S3_ENDPOINT=http://example.com:9000 \
   -e S3_BUCKET=test \
+  -e MANAGED_DIMENSIONS_GRAPH=http://example.com/managed-dimensions \
   -p 3001:3000 \
   ${IMAGE_TAG})
 

smoke-tests/app-smoke.sh

@@ -7,6 +7,7 @@ echo "🧪 Running App smoke tests for ${IMAGE_TAG}..."
 
 # Start container
 CONTAINER_ID=$(docker run -d \
+  -e AUTH_ISSUER=https://example.com/auth \
   -p 8080:80 \
   ${IMAGE_TAG})