Move node_modules installation in Dockerfile and add npx playwright install (fixes 8544a132013d00741e8d63c99d48e6da42236f88)

Dockerfile

@@ -21,6 +21,12 @@ RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
     xargs apt-get -y install < packages.txt && \
     npm install -g npm
 
+# Install package-lock.json
+COPY --chown=user package.json package-lock.json ./
+RUN npm install
+RUN npx playwright install
+RUN chown -R user:user "$HOME/app/node_modules"
+
 # Give app permissions to 'user' (non-root)
 RUN chown user:user .
 
@@ -42,10 +48,6 @@ USER user
 COPY --chown=user requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-# Install package-lock.json
-COPY --chown=user package.json package-lock.json ./
-RUN npm install
-
 # Copy nginx configuration
 COPY --chown=user nginx.conf /etc/nginx/sites-available/default