Exercise:

• Build a docker image for the following repo
• Manual steps:
  • Ensure node js and npm are installed
  • execute npm install this will install dependencies
  • execute npm run build which generates a folder called dist
  • execute npm run preview this should run the application
• First write the docker file for this

FROM node:20-alpine
LABEL project="learning"
ARG USERNAME=chess
RUN adduser -D -h /apps -s /bin/sh ${USERNAME}
USER ${USERNAME}
WORKDIR /apps
COPY --chown=${USERNAME}:${USERNAME} . /apps/
RUN npm install && npm run build
EXPOSE 4173
CMD ["npm","run","preview","--", "--host", "0.0.0.0"]

• Refer Here for application
• Use multi staged build
  • Ensure node js and npm are installed
  • execute npm run build which generates a folder called dist
  • Copy this folder into nginx and then the application will work on port 80
• Refer Here for the latest changes in Dockerfile

Docker Security Best Practices

• Run as a non root user
• Prefer using Distroless images
  • jdk: gcr.io/distroless/java17-debian12
  • aspdotnetcore: mcr.microsoft.com/dotnet/aspnet:9.0
• Try rebuilding spc and nop using the above images in final stage.