How to rename docker image

How to Name or Rename Docker Containers

When Docker containers are created, the system automatically assign a universally unique identifier (UUID) number to each container to avoid any naming conflicts and improve automation without human involvement.

In this article, we will explain how to easily identify Docker containers and name or rename containers in Linux.

By default, docker uses three ways to identify a container, namely:

Note that if no name is specified, by default, the the Docker daemon assigns containers a UUID long identifier; it generates a random string as a name.

How to Name a Docker Container

Name Docker Container

To view a list of all your docker containers, run the following command.

List Docker Containers

From now on, every command that worked with a container_id can now be used with a name that you assigned, for example.

How to Rename a Docker Container

To rename a docker container, use the rename sub-command as shown, in the following example, we renaming the container discourse_app to a new name disc_app.

After renaming a containers, confirm that it is now using the new name.

For more information, see the docker-run man page.

That’s all! In this article, we have expalined how to name and rename Docker containers. Use the comment form below to ask any questions or to add your thoughts to this guide.

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12 Essential Docker Commands You Should Know

Streamline your software development

D ocker has become an integral part of software engineering. We use Docker for development, testing, and deployment because it’s easy to manage the environment. Because of its portability, it has become popular in the software industry. That mean’s if your code works in development, it will work in production. Moreover, developers can collaborate faster without worrying about which software dependency they need to install.

In this post, I’ll go over 12 essential docker commands that will help you navigate through the magical world of Docker. You can find the official documentation for these commands from Docker’s documentation page.

1. docker search

We can use the command docker search to search for public images on the Docker hub. It will return information about the image name, description, stars, official and automated.

If you prefer a GUI-based search option, use the Docker Hub website.

2. docker pull

Tags are used to identify images inside a repository. If we don’t specify a tag Docker engine uses the :latest tag by default. So, in the previous example, Docker pulled the mysql:latest image.

If our application depends on a specific version of an image, we can specify that using a tag name.

3. docker images

Brilliant, now we should have some images in our local machine, and to confirm, let’s run the following command to list all the local images.

In my case, I have two images that we downloaded in the previous step.

4. docker run

5. docker ps

We can list all the running containers by using the following command.

6. docker stop

To stop a container, use the docker stop command with either the container id or container name. We may stop a container if we want to change our docker run command.

7. docker restart

Let’s restart our stopped contained by using the following command. We may want to use this after we reboot our machine.

8. docker rename

9. docker exec

Access the running container test_db by running the following command. It’s helpful if we want to access the MySQL command line and execute MySQL queries.

10. docker logs

This command is helpful to debug our Docker containers. It will fetch logs from a specified container.

11. docker rm

In case we want to remove a container, we can use the following command.

You may encounter an error like

Error response from daemon: You cannot remove a running container ……… Stop the container before attempting removal or force remove

12. docker rmi

Finally, if we want to free some disk space, we can use the docker rmi command with the image id to remove an image.

I use Docker almost every day for open-source development. It allows others to contribute to the project easily without worrying about how to run the project. I hope these 12 Docker commands will help you get started with Docker. If you like to know more about Docker, then check the articles below. Happy coding!

Docker how to change repository name or rename image?

I’m trying to change repository name of the image:

Hence I want to change the name server to something like myname/server :

How can I do this?

13 Answers 13

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Tags are just human-readable aliases for the full image name ( d583c3ac45fd. ).

So you can have as many of them associated with the same image as you like. If you don’t like the old name you can remove it after you’ve retagged it:

As a shorthand you can run:

Where d58 represents the first 3 characters of the IMAGE ID,in this case, that’s all you need.

Finally, you can remove the old image as follows:

Recently I had to migrate some images from Docker registry (docker.mycompany.com) to Artifactory (docker.artifactory.mycompany.com)

Since Docker doesn’t provide an image rename capability, here is how to effectively rename a docker image in three commands:

Note: This is really just adding a new tag and removing the old tag. As mentioned above, tags are actually just a mnemonic alias, or a pointer, to the image ID field. If that isn’t confusing enough, the Docker API and documentation also often use «tag» to refer to the version (i.e. that part of the image name that comes after the «:«, as in MyImage**:**latest).

However, typo’s and mistaken names are not the only place where you might want to rename a tag. For example, if you are using Amazon’s ECR, before you can check your image in, you are required to assign the full ARN as the tag. This means that your tags are big and ugly!

Note: As you look at the example below, it is useful to remember that the Amazon and DockerHub refer to each hierarchy of docker images as a «repository«.

So, a quick way to clean the ugliness up is

Of course, to check it back into ECR, you have to put the ugliness back on

Use the Docker command line

Estimated reading time: 17 minutes

docker

To list available commands, either run docker with no parameters or execute docker help :

Description

For more information about installing Docker or sudo configuration, refer to the installation instructions for your operating system.

Environment variables

The following list of environment variables are supported by the docker command line:

Because Docker is developed using Go, you can also use any environment variables used by the Go runtime. In particular, you may find these useful:

These Go environment variables are case-insensitive. See the Go specification for details on these variables.

Configuration files

Docker manages most of the files in the configuration directory and you should not modify them. However, you can modify the config.json file to control certain aspects of how the docker command behaves.

This flag only applies to whatever command is being ran. For persistent configuration, you can set the DOCKER_CONFIG environment variable in your shell (e.g.

Docker CLI configuration file ( config.json ) properties

Use the Docker CLI configuration to customize settings for the docker CLI. The configuration file uses JSON formatting, and properties:

By default, configuration file is stored in

The configuration file and other files inside the

/.docker configuration directory may contain sensitive information, such as authentication information for proxies or, depending on your credential store, credentials for your image registries. Review your configuration file’s content before sharing with others, and prevent committing the file to version control.

Customize the default output format for commands

Custom HTTP headers

The property HttpHeaders specifies a set of headers to include in all messages sent from the Docker client to the daemon. Docker does not try to interpret or understand these headers; it simply puts them into the messages. Docker does not allow these headers to change any headers it sets for itself.

Credential store options

The property credHelpers specifies a set of credential helpers to use preferentially over credsStore or auths when storing and retrieving credentials for specific registries. If this property is set, the binary docker-credential- will be used when storing or retrieving credentials for a specific registry. For more information, see the Credential helpers section in the docker login documentation

Orchestrator options for docker stacks

Automatic proxy configuration for containers

These settings are used to configure proxy settings for containers only, and not used as proxy settings for the docker CLI or the dockerd daemon. Refer to the environment variables and HTTP/HTTPS proxy sections for configuring proxy settings for the cli and daemon.

Default key-sequence to detach from containers

Once attached to a container, users detach from it and leave it running using the using CTRL-p CTRL-q key sequence. This detach key sequence is customizable using the detachKeys property. Specify a value for the property. The format of the is a comma-separated list of either a letter [a-Z], or the ctrl- combined with any of the following:

CLI Plugin options

The property plugins contains settings specific to CLI plugins. The key is the plugin name, while the value is a further map of options, which are specific to that plugin.

Sample configuration file

Following is a sample config.json file to illustrate the format used for various fields:

Experimental features

Experimental features provide early access to future product functionality. These features are intended for testing and feedback, and they may change between releases without warning or can be removed from a future release.

Starting with Docker 20.10, experimental CLI features are enabled by default, and require no configuration to enable them.

Notary

If using your own notary server and a self-signed certificate or an internal Certificate Authority, you need to place the certificate at tls/ /ca.crt in your docker config directory.

Alternatively you can trust the certificate globally by adding it to your system’s list of root Certificate Authorities.

Examples

Display help text

Option types

Boolean

Multi

Strings and Integers

List of Docker Commands: Cheat Sheet

Home » DevOps and Development » List of Docker Commands: Cheat Sheet

Docker is a software that offers a set of platform-as-a-service products for developing and deploying applications by packaging software in containers.

Containers are lightweight, portable, virtual environments that developers can share without risking inconsistencies in development. Due to these incredibly useful features, many organizations have switched from using virtual machines to Docker containers.

Like any other software, Docker introduces users to a new range of terminology related to its services. Users need to get acquainted with concepts such as Dockerfiles, images, containers, and other Docker-specific words. Once you have mastered the vocabulary, the next step is to get used to using Docker commands. A list of all the commands and options is quite extensive and would take time to learn them all by heart.

No matter if you are new to Docker or already have some experience with containerization, it is always good to have a reference point for all the common Docker commands.

In this tutorial, you will find the most common Docker commands along with a downloadable cheat sheet.

List of Docker Commands

Docker Container Commands

In this section you will find the most important commands related to the lifecycle of Docker containers.

Create a container (without starting it):

Rename an existing container:

Run a command in a new container:

Delete a container (if it is not running):

Update the configuration of one or more containers:

Starting and Stopping Containers

The following commands show you how to start and stop processes in a particular container.

Start a container:

Stop a running container:

Stop a running container and start it up again:

Pause processes in a running container:

Unpause processes in a running container:

Block a container until others stop (after which it prints their exit codes):

Kill a container by sending a SIGKILL to a running container:

Attach local standard input, output, and error streams to a running container:

Note: If you are still unsure of how Docker images and containers differ, you may want to check out the article on Images vs Containers.

Docker Image Commands

Below you fill find all the necessary commands for working with Docker images.

Create an image from a Dockerfile:

Pull an image from a registry:

Push an image to a registry:

Create an image from a tarball:

Create an image from a container:

Remove an image:

Load an image from a tar archive or stdin:

Save an image to a tar archive, streamed to STDOUT with all parent layers, tags, and versions:

Docker Commands for Container and Image Information

Once you set up your containers, you will need to know how to get all the important information for managing them. The following commands will provide details on images and containers on your system.

List running containers:

List the logs from a running container:

Note: Refer to our post Docker Container Logs: Commands & Best Practices for a more in-depth look at managing Docker container logs.

List low-level information on Docker objects:

List real-time events from a container:

Show port (or specific) mapping for a container:

Show running processes in a container:

Show live resource usage statistics of containers:

Show changes to files (or directories) on a filesystem:

List all images that are locally stored with the docker engine:

Show the history of an image:

Networks

One of the most valuable features of Docker software is the ability to connect containers to each other and to other non-Docker workloads. This section covers network-related commands.

Remove one or more networks:

Show information on one or more networks:

Connects a container to a network:

Disconnect a container from a network:

Docker Cheat Sheet PDF

You can find all the listed commands in a convenient one-page reference sheet seen below. To save it for future use, you can also download our Docker Command Cheat Sheet.

This list of commonly used Docker commands should help you become more familiar with them. The cheat sheet will be helpful when you want to create and manage containers, images, and networks.