多机多卡docker部署vllm

Sh -c takes echo to be the command string, sets $0 to foo (and would set $1, $2, etc. to later parameters if there were any), then runs echo with no parameters. Most people explain it perfectly here, so I won’t repeat all the answers. But to get a good feeling I would suggest testing it yourself by looking at the processes in the container. // Will accept the CMD as the arguments to /usr/sbin/nginx. So CMD can act as default parameters to ENTRYPOINT and then we can override the CMD args from args. Docker has a default entrypoint which is /bin/sh -c but does not have a default command.

Solution

The Docker team also strongly discourages using ADD to download and copy a package from a URL. Instead, it’s safer and more efficient to use wget or curl within a RUN command. By doing so, you avoid creating an additional image layer and save space. Docker’s official documentation notes that COPY should always be the go-to instruction as it is more transparent than ADD.

How do I get into a Docker container’s shell? closed

Because image size matters, using ADD to fetch packages from remote URLs is strongly discouraged; you should use curl or wget instead. That way you can delete the files you no longer need after they’ve been extracted and you won’t have to add another layer in your image. If you want to detach from container without exiting(without killing the bash shell),By default , you can use ctrl-p,q.

If you did this in 3 steps then there will be a new image created after each step. You can do this in one step using & but it becomes a hassle. After the installation, go to your docker-compose.yml directory and then execute docker-compose up to create and start services in your docker-compose.yml file. Opener is a set of python scripts wrapped-up to a docker image. It finds target container by any unique attribute (name, id, port, image), tries to connect to target using bash. If bash is not found opener tries to connect using sh.

Docker: adding a file from a parent directory

The following example would start an SSH server attached to a container with name ‘my-container’. Use “sudo docker login” not “docker login” as one uses the root account and the other uses your personal. In this case your dockerhub password will be an access token.

How to shell-in any container

You cannot override an ENTRYPOINT when starting a container unless you add the –entrypoint flag. Both CMD and ENTRYPOINT instructions define what command gets executedwhen running a container. The ENTRYPOINT specifies a command that will always be executed when the container starts. The above example is used when we want to copy files or directories from the host machine.

• An easy way to work with the question you asked is by mounting the directory inside Docker to the local system’s directory.
• A valid use case for ADD is when you want to extract a local tar file into a specific directory in your Docker image.
• Typically you would specify your password using the interactive docker login then do a docker push.
• The above example is the add operation in the docker file.
• While this works, it’s not a good solution, as we have a redundant “sleep” command.

For any one trying to build Windows based image, you need to access argument with %% for cmd. According to the doc for the docker build command, there is a parameter called –build-arg. I’ve created a containerized SSH server that you can ‘stick’ to any running container. This way you can create compositions with every container.

• Because the container’s only purpose is to sleep, so having to specify the sleep command explicitly is a bit awkward.
• If you want to detach from container without exiting(without killing the bash shell),By default , you can use ctrl-p,q.
• So I just put up this post with a summary solution for people who have the same requirements as me.
• The main purpose of a CMD is to provide defaults for an executing container.

While this works, it’s not a good solution, as we have a redundant “sleep” command. Because the container’s only purpose is to sleep, so having to specify the sleep command explicitly is a bit awkward. If docker specialist you’re copying in local files to your Docker image, always use COPY because it’s more explicit. COPY and ADD are both Dockerfile instructions that serve similar purposes. They let you copy files from a specific location into a Docker image. ADD copies a file/directory from your host to your image, but can also fetch remote URLs, extract TAR files, etc…

Finally if sh is not found either opener installs busybox into target container and connects to the target using busybox shell, opener deletes busybox during disconnection. These a, ctrl-a, X, or ctrl-\\ values are all examples of valid key sequences. To configure a different configuration default key sequence for all containers, see Configuration file section. If you have a foo.tar.gz file, comparing the following command.The ADD command creates less layers than the COPY command, and saves a lot of net traffic when pushing docker image. A valid use case for ADD is when you want to extract a local tar file into a specific directory in your Docker image. Run command creates a container from the image and then starts the root process on this container.

Run creates a container instance of an existing (or downloadable) image and starts it. I checked through all these answers, none were helpful for me. I won’t add a super link here, since it’s not written in English. So I just put up this post with a summary solution for people who have the same requirements as me. This is best if you don’t want to specify an entry point in your docker build file..

Also if you follow the link you’ll have command completion for your docker container names too. When you connect to this SSH service (with your SSH client of choice) a Bash session will be started in the container with name ‘my-container’. Docker-compose exec takes the name of the service as per your docker-compose.yml file. I’m using the WordPress base image and docker-compose. If this does not work and you attached through docker attach, you can detach by killing the docker attach process. You can also run your container with –rm arguments so if you stop your container it will automatically be removed.