Dockerfile

FROM node:20.3.1-alpine

# Installs latest Chromium package.
RUN apk add --no-cache \
      chromium \
      nss \
      freetype \
      harfbuzz \
      ca-certificates \
      ttf-freefont \
      dumb-init

# Tell Puppeteer to skip installing Chrome. We'll be using the installed package.
ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true \
    PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser

# It's a good idea to use dumb-init to help prevent zombie chrome processes.
ENTRYPOINT ["dumb-init", "--"]

# Build the app
WORKDIR /usr/src/app
COPY package*.json ./
ENV NODE_ENV=production
RUN npm install --production
COPY . .

# Add user so we don't need --no-sandbox.
RUN addgroup -S pptruser && adduser -S -G pptruser pptruser \
    && mkdir -p /home/pptruser/Downloads \
    && chown -R pptruser:pptruser /home/pptruser \
    && chown -R pptruser:pptruser ./node_modules

# Run everything after as non-privileged user.
USER pptruser

# Start the app
CMD [ "npm", "start" ]

# Export port 8080
EXPOSE 8080