From 7cc73e12543e11d66d30b43cab935736ae2b3f16 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 13 Jun 2025 05:14:42 +0000
Subject: [PATCH] Refactor Dockerfiles to use multi-stage builds

This change modifies the Dockerfiles in `genkit` and `socket.io` to implement multi-stage builds.

The first stage, named 'builder', is responsible for installing dependencies (including devDependencies like npm) and building the application.

The second stage creates a lean production image by copying only the necessary artifacts (the `dist` folder and production `node_modules`) from the 'builder' stage.

This approach significantly reduces the final image size and improves security by excluding npm and other development tools from the production environment.
---
 genkit/Dockerfile    | 13 ++++++++++---
 socket.io/Dockerfile | 13 ++++++++++---
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/genkit/Dockerfile b/genkit/Dockerfile
index 51469df..fb586ff 100644
--- a/genkit/Dockerfile
+++ b/genkit/Dockerfile
@@ -1,15 +1,22 @@
-FROM node:22-alpine
+# Builder stage
+FROM node:22-alpine AS builder
 
 WORKDIR /app
 
 COPY package*.json ./
-
 RUN npm install
 
 COPY . .
-
 RUN npm run build
 
+# Production stage
+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules ./node_modules
+
 ENV NODE_ENV=production
 
 EXPOSE 4001
diff --git a/socket.io/Dockerfile b/socket.io/Dockerfile
index 315cd3e..b3e7442 100644
--- a/socket.io/Dockerfile
+++ b/socket.io/Dockerfile
@@ -1,15 +1,22 @@
-FROM node:22-alpine
+# Builder stage
+FROM node:22-alpine AS builder
 
 WORKDIR /app
 
 COPY package*.json ./
-
 RUN npm install
 
 COPY . .
-
 RUN npm run build
 
+# Production stage
+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/node_modules ./node_modules
+
 ENV NODE_ENV=production
 
 EXPOSE 3001