reduce docker image size

Author: orangecoding

.dockerignore

@@ -1,7 +1,47 @@
+# Dependencies (will be installed fresh in container)
 node_modules/
-npm-debug.log
-test/
+
+# Database and config (mounted as volumes)
 db/
 conf/
+
+# Git
 .git/
 .github/
+.gitignore
+
+# IDE and editor
+.idea/
+.vscode/
+*.swp
+*.swo
+.DS_Store
+
+# Testing
+test/
+
+# Documentation
+doc/
+*.md
+!README.md
+
+# Development config files
+.babelrc
+.husky/
+.nvmrc
+.prettierrc
+.prettierignore
+eslint.config.js
+
+# Docker files (not needed inside container)
+Dockerfile
+docker-compose.yml
+docker-test.sh
+.dockerignore
+
+# Logs
+*.log
+npm-debug.log
+
+# Build artifacts (built fresh in container)
+dist/

Dockerfile

@@ -1,27 +1,58 @@
-FROM node:22-slim
+# ================================
+# Stage 1: Build stage
+# ================================
+FROM node:22-alpine AS builder
+
+WORKDIR /build
+
+# Install build dependencies needed for native modules (better-sqlite3)
+RUN apk add --no-cache python3 make g++
+
+# Copy package files first for better layer caching
+COPY package.json yarn.lock ./
+
+# Install all dependencies (including devDependencies for building)
+RUN yarn config set network-timeout 600000 \
+  && yarn --frozen-lockfile
+
+# Copy source files needed for build
+COPY index.html vite.config.js ./
+COPY ui ./ui
+COPY lib ./lib
+
+# Build frontend assets
+RUN yarn build:frontend
+
+# ================================
+# Stage 2: Production stage
+# ================================
+FROM node:22-alpine
 
 WORKDIR /fredy
 
-# Install Chromium and curl without extra recommended packages and clean apt cache
-# curl is needed for the health check
-RUN apt-get update \
-  && apt-get install -y --no-install-recommends chromium curl \
-  && rm -rf /var/lib/apt/lists/*
+# Install Chromium and curl (for healthcheck)
+# Using Alpine's chromium package which is much smaller
+RUN apk add --no-cache chromium curl
 
 ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
-    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
+    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
 
-# Copy lockfiles first to leverage cache for dependencies
-COPY package.json yarn.lock .
+# Install build dependencies for native modules, then remove them after yarn install
+COPY package.json yarn.lock ./
 
-# Set Yarn timeout, install dependencies and PM2 globally
-RUN yarn config set network-timeout 600000 \
-  && yarn --frozen-lockfile \
-  && yarn global add pm2
+RUN apk add --no-cache --virtual .build-deps python3 make g++ \
+  && yarn config set network-timeout 600000 \
+  && yarn --frozen-lockfile --production \
+  && yarn cache clean \
+  && apk del .build-deps
 
-# Copy application source and build production assets
-COPY . .
-RUN yarn build:frontend
+# Copy built frontend from builder stage
+COPY --from=builder /build/ui/public ./ui/public
+
+# Copy application source (only what's needed at runtime)
+COPY index.js ./
+COPY index.html ./
+COPY lib ./lib
 
 # Prepare runtime directories and symlinks for data and config
 RUN mkdir -p /db /conf \
@@ -34,5 +65,4 @@ EXPOSE 9998
 VOLUME /db
 VOLUME /conf
 
-# Start application using PM2 runtime
-CMD ["pm2-runtime", "index.js"]
+CMD ["node", "index.js"]

docker-compose.yml

@@ -1,22 +1,24 @@
 services:
   fredy:
     container_name: fredy
-    # build from empty build folder to reduce size of image
     build:
       context: .
       dockerfile: Dockerfile
     image: ghcr.io/orangecoding/fredy
-    # map existing config and database
     volumes:
       - ./conf:/conf
       - ./db:/db
     ports:
       - "9998:9998"
     restart: unless-stopped
+    # Resource limits to prevent runaway memory usage from Chromium
+    deploy:
+      resources:
+        limits:
+          memory: 1G
     healthcheck:
-      # The container will immediately stop when health check fails after retries
-      test: ["CMD-SHELL", "curl --fail --silent --show-error --max-time 5 http://localhost:9998/ || exit 1"]
+      test: ["CMD", "curl", "--fail", "--silent", "--show-error", "--max-time", "5", "http://localhost:9998/"]
       interval: 120s
       timeout: 10s
-      retries: 1
-      start_period: 10s
+      retries: 3
+      start_period: 30s

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fredy",
-  "version": "15.1.0",
+  "version": "15.1.1",
   "description": "[F]ind [R]eal [E]states [d]amn eas[y].",
   "scripts": {
     "prepare": "husky",