update dockerfile and action

.gitea/workflows/action.yaml

@@ -39,9 +39,14 @@ jobs:
                type=semver,pattern={{raw}}
                type=sha
                type=semver,pattern={{version}}
+      - name: Generate random password for certificate
+        id: password
+        run:
+          echo "secret=$(openssl rand -base64 12)" >> $GITHUB_OUTPUT
       - name: Build and push
         uses: https://github.com/docker/build-push-action@v5
         with:
+          build-args: CERT_PASSWORD=${{ steps.password.outputs.secret }}           
           context: .
           push: true
           tags: ${{ steps.meta.outputs.tags }}