Changes to dockerfile for mongodb 4 support

docker/Dockerfile

@@ -23,24 +23,30 @@ RUN apk add --no-cache python3 make g++ \
 
 # Stage 4: Final production image
 FROM mongo:4.4-focal
-# Install Node.js and nginx, cleanup in the same layer
+
+# First install required packages for adding repositories
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        curl \
+        gnupg \
+    && rm -rf /var/lib/apt/lists/*
+
+# Now add MongoDB repository key and Node.js repository
 RUN set -ex; \
     # Add MongoDB repository key
     curl -fsSL https://pgp.mongodb.com/server-4.4.asc | gpg --dearmor -o /usr/share/keyrings/mongodb-archive-keyring.gpg; \
     echo "deb [signed-by=/usr/share/keyrings/mongodb-archive-keyring.gpg] http://repo.mongodb.org/apt/ubuntu focal/mongodb-org/4.4 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.4.list; \
-    # Update and install packages
-    apt-get update && \
+    # Add Node.js repository
+    curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
+
+# Install remaining packages
+RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         nginx \
-        curl \
-        gnupg && \
-    # Install Node.js
-    curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
-    apt-get install -y --no-install-recommends nodejs && \
-    # Cleanup
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/* && \
-    rm -rf /var/cache/apt/*
+        nodejs \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/* \
+    && rm -rf /var/cache/apt/*
 
 # Configure nginx and copy frontend
 COPY docker/nginx.conf /etc/nginx/nginx.conf