# Use an official Node.js runtime as the base image
# Node 22 Active LTS for Next.js 16 (>=20.9 required)
FROM node:22-alpine

# Set the working directory in the container
WORKDIR /app

# Dev host runs the Next dev server so changes can be tested before production
ENV NODE_ENV=development

# Copy package.json and package-lock.json (if available)
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy the rest of the application code
COPY . .

# Expose the port the app runs on
EXPOSE 3000

# Define the command to run the app
CMD ["npm", "run", "dev"]