fix(backend): Zet Docker terug

backend/Dockerfile

@@ -1,13 +1,12 @@
-FROM node:22
+FROM node:22 AS build-stage
 
 WORKDIR /app/dwengo
 
-COPY ./backend/i18n ./i18n
-
 # Install dependencies
 
 COPY package*.json ./
 COPY backend/package.json ./backend/
+# Backend depends on common
 COPY common/package.json ./common/
 
 RUN npm install --silent
@@ -15,14 +14,37 @@ RUN npm install --silent
 # Build the backend
 
 # Root tsconfig.json
-COPY tsconfig.json ./
+COPY tsconfig.json tsconfig.build.json ./
 
 COPY backend ./backend
 COPY common ./common
 COPY docs ./docs
 
-RUN npm run build --workspace=common
-RUN npm run build --workspace=backend
+RUN npm run build
+
+FROM node:22 AS production-stage
+
+WORKDIR /app/dwengo
+
+# Copy static files
+
+COPY ./backend/i18n ./i18n
+
+# Copy built files
+
+COPY --from=build-stage /app/dwengo/common/dist ./common/dist
+COPY --from=build-stage /app/dwengo/backend/dist ./backend/dist
+
+COPY package*.json ./
+COPY backend/package.json ./backend/
+# Backend depends on common
+COPY common/package.json ./common/
+
+RUN npm install --silent --only=production
+
+COPY ./docs ./docs
+COPY ./backend/i18n ./backend/i18n
+COPY ./backend/.env ./backend/.env
 
 EXPOSE 3000