How to Use Docker Environment Variables: ARG vs ENV
Learn how Docker environment variables work: ARG for build time, ENV for runtime, in Dockerfiles and Docker Compose. Examples, precedence rules, secrets.
Dragos
Tag: #Dockerfile
3 guides with this tag
Docker COPY Multiple Files in One Layer (Dockerfile Guide)
How to copy multiple files with one Docker COPY instruction: multi-source syntax, wildcards, --parents, --exclude, and BuildKit caching best practices.
Dragos
Add Users to a Docker Container: Non-Root User Guide
Learn how to add users to a Docker container the secure way: Dockerfile USER, UID/GID pinning, docker exec -u, Compose user & group_add, and permission fixes.
Dragos