build backend image without sourcecode and sourcemap

backend/Dockerfile

@@ -1,17 +1,29 @@
-FROM node:20
+# Stage 1: Build the application
+FROM node:20 AS build
 
 WORKDIR /usr/src/app
 COPY . .
 
+RUN npm install \
+    && npm run build
+
+# Stage 2: Create the final image without source files
+FROM node:20
+
+WORKDIR /usr/src/app
+
+# Install dumb-init and dockerize
 ENV DOCKERIZE_VERSION v0.7.0
-RUN    wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_$(uname -m) \
+RUN wget -O /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.5/dumb-init_1.2.5_$(uname -m) \
     && chmod +x /usr/local/bin/dumb-init \
     && wget -O /usr/local/bin/dockerize.tar.gz https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-$(dpkg --print-architecture)-${DOCKERIZE_VERSION}.tar.gz \
     && tar -C /usr/local/bin -xzvf /usr/local/bin/dockerize.tar.gz \
-    && rm /usr/local/bin/dockerize.tar.gz \
-    && npm install \
-    && echo -e "\n\nBulding...\n" \
-    && npm run build
+    && rm /usr/local/bin/dockerize.tar.gz
+
+# Copy only the necessary build artifacts from the build stage
+COPY --from=build /usr/src/app/dist ./dist
+COPY --from=build /usr/src/app/node_modules ./node_modules
+COPY --from=build /usr/src/app/package.json ./package.json
 
 ENV NODE_ENV=production
 ENV PORT=3000

backend/tsconfig.json

@@ -10,6 +10,5 @@
     "emitDecoratorMetadata": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
-    "sourceMap": true,
   }
 }