Docker - Port

About

Port Management in docker.

Management

List

docker port list port mappings or a specific mapping for the container

All

docker port containerName

one

Look up what port is mapped externally to port 5000 inside the container.

docker port nostalgic_morse 5000
0.0.0.0:49155

Redirection

Redirecting the port 80 from the host to the port 80 of the container

Format

-p host_port:container_port 
#or 
-p IP::port
docker run -d -p 80:80 user/image

Expose

In a dockerfile, you can open a port (expose it) with the expose command

EXPOSE 80

Find

  • Find out what host port the container’s containerName port 22 is mapped to
docker port containerName 22
0.0.0.0:49154

Powered by ComboStrap