Move Node.js installation in Dockerfile (fixes 940e723bcdb93fb39d63f5f7264c2fc1a2385cd6)

Dockerfile

@@ -14,9 +14,12 @@ WORKDIR $HOME/app
 # Switch to root
 USER root
 
-# Install nginx and packages.txt
+# Install nginx, Node.js, and packages.txt
 COPY --chown=root packages.txt packages.txt
-RUN apt-get -y update && apt-get -y install nginx && xargs apt-get -y install < packages.txt
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
+    apt-get -y update && apt-get -y install nginx && apt-get install -y nodejs && \
+    xargs apt-get -y install < packages.txt && \
+    npm install -g npm
 
 # Give app permissions to 'user' (non-root)
 RUN chown user:user .
@@ -24,13 +27,13 @@ RUN chown user:user .
 # Give nginx permissions to 'user' (non-root)
 # See https://www.rockyourcode.com/run-docker-nginx-as-non-root-user/
 RUN mkdir -p /var/cache/nginx \
-             /var/log/nginx \
-             /var/lib/nginx
+    /var/log/nginx \
+    /var/lib/nginx
 RUN touch /var/run/nginx.pid
 RUN chown -R user:user /var/cache/nginx \
-                       /var/log/nginx \
-                       /var/lib/nginx \
-                       /var/run/nginx.pid
+    /var/log/nginx \
+    /var/lib/nginx \
+    /var/run/nginx.pid
 
 # Switch to 'user' (non-root)
 USER user
@@ -39,11 +42,9 @@ USER user
 COPY --chown=user requirements.txt requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-# Install Node.js and Playwright
-RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
-    apt-get install -y nodejs && \
-    npm install -g npm && \
-    npm install express playwright
+# 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