Updating Environment Variables of a Container using Docker

Question

I\'ve setup a server with multiple docker containers, accessible with jwilders nginx reversre proxy. When you run the containers you can set the VIRTUAL_HOST environment var

Answer 1

Destroy your container and start a new one up with the new environment variable using docker run -e .... It's identical to changing an environment variable on a running process, you stop it and restart with a new value passed in. Replace the concept of restarting a process with destroying and recreating a new container.

If your container contains files that cannot be lost, then you should be using volumes. The other contents of the container filesystem should be either disposable or immutable.