ci: incorrect syntax

.gitea/workflows/server.yaml

@@ -38,7 +38,7 @@ jobs:
 
   docs:
     runs-on: ubuntu-latest
-    container: registry.jetbrains.team/p/writerside/builder/writerside-builder:$DOCKER_VERSION
+    container: registry.jetbrains.team/p/writerside/builder/writerside-builder:${{env.DOCKER_VERSION}}
     steps:
       - name: Checkout repository
         uses: https://github.com/actions/checkout@v3
@@ -47,11 +47,12 @@ jobs:
           set -e
           export DISPLAY=:99
           Xvfb :99 &
-          /opt/builder/bin/idea.sh helpbuilderinspect -source-dir . -product $INSTANCE -output-dir public/ || true
-          echo "Test existing of $ARTIFACT artifact"
-          test -e public/$ARTIFACT
+          /opt/builder/bin/idea.sh helpbuilderinspect -source-dir . -product ${{env.INSTANCE}} -output-dir public/ || true
+          echo "Test existing of ${{ env.ARTIFACT }} artifact"
+          test -e public/${{ env.ARTIFACT }}
       - name: rename artifact
         run: |
+          ls
           mv artifacts/${{ env.ARTIFACT }} artifacts/wiki.zip
       - name: Upload documentation
         uses: actions/upload-artifact@v3