diff --git a/.github/workflows/docker-staging.yml b/.github/workflows/docker-staging.yml
index fd7ff82c..37a2ddee 100644
--- a/.github/workflows/docker-staging.yml
+++ b/.github/workflows/docker-staging.yml
@@ -17,6 +17,8 @@ jobs:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Prepare .env in root
+        run: cp .env.example .env
       - name: Build and push backend image
         uses: docker/build-push-action@v5
         with:
diff --git a/.github/workflows/nox-ci.yml b/.github/workflows/nox-ci.yml
index 0b282495..ae74465d 100644
--- a/.github/workflows/nox-ci.yml
+++ b/.github/workflows/nox-ci.yml
@@ -33,5 +33,13 @@ jobs:
         run: npm install -g yarn
       - name: Install nox-poetry
         run: pipx inject nox nox-poetry
+      - name: Install Python dependencies (backend)
+        run: |
+          cd backend
+          poetry install
+      - name: Install JS dependencies (frontend)
+        run: |
+          cd frontend
+          yarn install
       - name: Run Nox (all checks)
         run: nox