docker error - 'name is already in use by container'

Question

Running the docker registry with below command always throws an error:

dev:tmp me$ docker run \\
     -d --name registry-v1 \\
     -e SETTINGS_         


        

Answer 1

The Problem: you trying to create new container while in background container with same name is running and this situation causes conflicts.

The error would be like:

Cannot create continer for service X :Conflict. The name X is already in use by container abc123xyz. You have to remove ot delete (or rename) that container to be able to reuse that name.

Solution rename the service name in docker-compose.yml or delete the running container and rebuild it again (this solution related to Unix/Linux/macOS systems):

1. get all running containers sudo docker ps -a
2. get the specific container id
3. stop and remove the duplicated container / force remove it

sudo docker stop <container_id>
sudo docker rm <container_id>

or

sudo docker rm --force <container_id>

Answer 2

Ok, so I didn't understand either, then I left my pc, went to do other things, and upon my return, it clicked :D

1. You download a docker image file.

2. Now, you use docker run, and give it a name (e.g: newWebServer).

   docker run -d -p 8080:8080 -v --name newWebServer new/webserver-image

OK. So now, docker run just created a container from your image. If it isn't running, you can now start it with it's name:

docker start newWebServer

You can check all your containers (they may or may not be running) with

docker ps -a

You can stop and start them with their name or the container id from the CONTAINER ID column now e.g:

docker stop newWebServer

docker start c3028a89462c

And list all your images, with

docker images -a

In a nutshell, download an image; docker run creates a container from it; stop it with docker stop (name or container id); start it with docker start (name or container id).

Answer 3

TL:DR;

List all containers:
docker ps -a
Remove the concerned container by id:
docker container rm <container_id>

Answer 4

Simple Solution: Goto your docker folder in the system and delete .raw file or docker archive with large size.

Answer 5

The OP's problem is the error. Deleting state isn't the only solution - or even a good one. The problem is docker run isn't re-entrant, and docker start is impotent w/o run. So we have to combine them.

For example to run Postgres w/o destroying previous state, try this:

docker start postgres || docker run -d -p 5432:5432 --name postgres -e POSTGRES_PASSWORD=password postgres:13-alpine

Answer 6

Here what i did, it works fine.

step 1:(it lists docker container with its name)

docker ps -a

step 2:

docker rm name_of_the_docker_container