CODEWITHSUNDEEP
dockercentos7
alexis
alexis

Reputation: 1211

Hostname and IP address of the OS in the docker keep changing

Using a blank centos7 image I start a container with docker run -it centos:7.7.1908 I set the hostname at /etc/hostname and IP with hostname at /etc/hosts and make a few other changes.

At this point all looks good. I then open up another shell get the contain ID and do a docker commit, basically make a new image foo from the running container

When i then start a new container from the image foo docker run -it foo it has all the changes I made with the exception to the changed in the /etc/hosts and /etc/hostname. They get reset to some random sting and IP address.

Why is this? Or is there a better way to set the IP and hostname in an image?

Upvotes: 1

Views: 206

Answers (1)

Hamed Norouzi
Hamed Norouzi

Reputation: 71

You can set the IP address and hostname with --ip and --hostname, respectively when you create a new container with docker run.

Upvotes: 1

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