Dockerfile

# for deploying a Next.js application in a Docker container

# Use Node 22 as the base image
FROM node:22-alpine

# Set the working directory inside the container
WORKDIR /app

# Copy package.json and package-lock.json
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy the rest of the application code
COPY . .

# Expose the port your app runs on
EXPOSE 7860

# --- FIX IS HERE ---
# Build the application. This runs during the `docker build` command.
RUN npm run build

# Change ownership of /app to the node user
# Do this *after* all root operations (like npm install/build) are done
RUN chown -R node:node /app

# Switch to a non-root user for better security
USER node

# Command to run the application when the container starts
CMD ["npm", "run", "start"]