This example shows how to migrate a Node.js application to Docker Hardened Images.
The following examples show Dockerfiles before and after migration to Docker Hardened Images. Each example includes four variations:
- Before (Wolfi): A sample Dockerfile using Wolfi distribution images, before migrating to DHI
- Before (DOI): A sample Dockerfile using Docker Official Images, before migrating to DHI
- After (multi-stage): A sample Dockerfile after migrating to DHI with multi-stage builds (recommended for minimal, secure images)
- After (single-stage): A sample Dockerfile after migrating to DHI with single-stage builds (simpler but results in a larger image with a broader attack surface)
NoteMulti-stage builds are recommended for most use cases. Single-stage builds are supported for simplicity, but come with tradeoffs in size and security.
You must authenticate to
dhi.iobefore you can pull Docker Hardened Images. Use your Docker ID credentials (the same username and password you use for Docker Hub). If you don't have a Docker account, create one for free.Run
docker login dhi.ioto authenticate.
