.

Dockerfile

@@ -30,36 +30,34 @@ WORKDIR $HOME/app
 # Copy the current directory contents into the container at $HOME/app setting the owner to the user
 COPY --chown=user . $HOME/app
 
-# Create nginx configuration for WebSocket support
+# Create nginx configuration for WebSocket support using echo commands
 USER root
-RUN cat > /etc/nginx/sites-available/default << 'EOF'
-server {
-    listen 7860;
-    server_name _;
-
-    # WebSocket support
-    location /ws {
-        proxy_pass http://localhost:8080/ws;
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection "upgrade";
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-        proxy_read_timeout 86400;
-    }
-
-    # Regular HTTP requests
-    location / {
-        proxy_pass http://localhost:8080;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-    }
-}
-EOF
+RUN echo 'server {' > /etc/nginx/sites-available/default && \
+    echo '    listen 7860;' >> /etc/nginx/sites-available/default && \
+    echo '    server_name _;' >> /etc/nginx/sites-available/default && \
+    echo '' >> /etc/nginx/sites-available/default && \
+    echo '    # WebSocket support' >> /etc/nginx/sites-available/default && \
+    echo '    location /ws {' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_pass http://localhost:8080/ws;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_http_version 1.1;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header Upgrade $http_upgrade;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header Connection "upgrade";' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header Host $host;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header X-Real-IP $remote_addr;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header X-Forwarded-Proto $scheme;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_read_timeout 86400;' >> /etc/nginx/sites-available/default && \
+    echo '    }' >> /etc/nginx/sites-available/default && \
+    echo '' >> /etc/nginx/sites-available/default && \
+    echo '    # Regular HTTP requests' >> /etc/nginx/sites-available/default && \
+    echo '    location / {' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_pass http://localhost:8080;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header Host $host;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header X-Real-IP $remote_addr;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;' >> /etc/nginx/sites-available/default && \
+    echo '        proxy_set_header X-Forwarded-Proto $scheme;' >> /etc/nginx/sites-available/default && \
+    echo '    }' >> /etc/nginx/sites-available/default && \
+    echo '}' >> /etc/nginx/sites-available/default
 
 USER user