# Use lightweight Node.js 20 base image
FROM node:20-alpine@sha256:9bef0ef1e268f60627da9ba7d7605e8831d5b56ad07487d24d1aa386336d1944 as builder

# Set working directory
WORKDIR /app

# Copy package files separately for better Docker caching
COPY package.json package-lock.json ./

# Install dependencies
RUN npm ci

# Copy entire project
COPY . .

# Set it as an environment variable for the build process
ARG HCAPTCHA_SITE_KEY
ENV NEXT_PUBLIC_HCAPTCHA_SITE_KEY=${HCAPTCHA_SITE_KEY}

# Create a .env file before build
RUN echo "NEXT_PUBLIC_HCAPTCHA_SITE_KEY=${HCAPTCHA_SITE_KEY}"

# Build the Next.js app
RUN npm run build

# Use a minimal base image for running the app
FROM node:20-alpine@sha256:9bef0ef1e268f60627da9ba7d7605e8831d5b56ad07487d24d1aa386336d1944

WORKDIR /app

# Copy built files from the builder stage
COPY --from=builder /app ./

# Expose port
EXPOSE 3000

# Start Next.js in production mode
CMD ["npm", "run", "start"]
