Optimise dockerfile & docker-compose

Dockerfile

@@ -1,13 +1,45 @@
-FROM node:18-alpine
+# syntax=docker/dockerfile:1
 
-WORKDIR /usr/src/app
+ARG NODE_VERSION=18
+ARG NODE_ENV=development
 
+# --- Base Stage ---
+FROM node:${NODE_VERSION}-alpine as base
+WORKDIR /usr/src/app
+# Install common dependencies (e.g. PostgreSQL client)
 RUN apk add --no-cache postgresql-client
+EXPOSE 3005
 
-COPY package*.json ./
-RUN npm install
+# --- Dependencies Stage ---
+FROM base as deps
+# Copy package files first to leverage caching
+COPY package.json package-lock.json ./
 
+# Use cache mount for npm downloads; conditionally install based on NODE_ENV
+RUN --mount=type=cache,target=/root/.npm \
+    if [ "$NODE_ENV" = "production" ]; then \
+      npm ci --omit=dev; \
+    else \
+      npm ci --include=dev; \
+    fi
+
+# --- Builder Stage ---
+FROM deps as builder
+# Copy the rest of the application code
 COPY . .
+# Generate Prisma client (or other build steps)
 RUN npx prisma generate
 
-EXPOSE 3005
+# --- Development Final Stage ---
+FROM base as dev
+
+COPY --from=builder /usr/src/app ./
+
+CMD ["npm", "run", "dev"]
+
+# --- Production Final Stage ---
+FROM base as production
+
+COPY --from=builder /usr/src/app ./
+
+CMD ["node", "index.js"]

docker-compose.yml

@@ -12,7 +12,10 @@ services:
       - postgres_data:/var/lib/postgresql/data/
 
   jamcore:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile
+      target: ${NODE_ENV:-dev}
     environment:
       DATABASE_URL: "postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}"
     ports: