reduce Docker image size and use alpine as base

Dockerfile

@@ -1,24 +1,42 @@
-FROM node:19-buster-slim as build
+FROM node:20-alpine AS build
 WORKDIR /app
 
-RUN apt-get update -y && apt-get install -y openssl python3 build-essential make gcc
+# Install dependencies
+RUN apk update && \
+    apk add --no-cache openssl python3 make g++ \
+    && ln -sf python3 /usr/bin/python
 
+# Copy package files and install dependencies
 COPY package.json package-lock.json ./
-RUN npm i
-
-RUN apt-get purge -y gcc make build-essential && apt-get autoremove -y
+RUN npm install
 
+# Copy application files
 COPY src/ src/
-COPY scripts scripts/
+COPY scripts/ scripts/
 COPY prisma/schema.prisma prisma/
 COPY tsconfig.json ./
 
+# Generate prisma client and build the application
 RUN npx prisma generate
-
 RUN npm run build
 
-RUN npm i
+# Runtime stage
+FROM node:20-alpine
+WORKDIR /app
+
+RUN apk update && \
+    apk add --no-cache openssl
+
+# Copy built files from the build stage
+COPY --from=build /app .
+
+# Install only runtime dependencies
+RUN npm install --only=production
+
+# Copy and run migrations
+COPY --from=build /app/prisma ./prisma
 RUN npx prisma migrate deploy
 
+# Set entrypoint
 ENTRYPOINT [ "node", "scripts/start.js" ]
 CMD ["start"]