Docker run bash script in container

Docker run bash script in container. In the Dockerfile the ENTRYPOINT has to be JSON-array syntax for it to be able to see the CMD arguments, and the script itself needs to actually run the CMD, typically with a line like exec "$@". To test if the container is running by name we might try $ docker ps --filter "name=myapp" --filter "status=running" CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 91959ed76e77 foo/barbaz:latest "/init" 10 minutes ago Up 10 minutes myapp Sep 15, 2022 · I specifically want to run this file during or after the docker run within the docker since I am creating the environment variables during the docker run and using it in the above bash script. sh And to run from a bash session: docker exec -it mycontainer /bin/bash From there you can run your script. Step 4: Now let’s create a container named demo using script-demo image. This tutorial covers the basics of Docker, including how to create a container, run a bash script, and share data between the host and container. Feb 14, 2019 · Bash script to start Docker containers. For example. docker_run. EDIT: which can be used to fail your script if docker isn't running, like so: #!/usr/bin/env bash if ! docker info > /dev/null 2>&1; then echo "This script uses docker, and it isn't running - please start docker and try again!" exit 1 fi If you installed Docker using the convenience script, you should upgrade Docker using your package manager directly. I tried overriding the entrypoint but didn't work. It also won't have your prompt, the PS1 variable is not automatically exported into the container's environment. If you open another terminal and docker ps, you'll find the container is running and you can docker attach to it or docker exec -it <container_id> bash to enter it again. It will override the arguments passed Apr 25, 2024 · docker run -d--name container-name alpine watch "date >> /var/log/date. Example #1. How would I stop and delete the Docker container &quot; License. The script's content is : Excuse my boldness in asking you a question, because when I terminate my Dockerfile that way, and I have run it with docker-compose up -d, I can't access the bash, while with other containers like php, nginx that terminate with CMD, I can access the bash. docker ps docker ps gives you a container ID. I think it fails in the build process because Docker wants to use sh and not bash . Here is the problem: Unless elasticsearch is running, the script will not initialize any security index. A container is a process which runs on a host. Modified 5 years, 7 months ago. EDIT2: Once that's done, you can run exec to get a shell into the container: docker exec -ti container-name /bin/bash I'm using FROM nginx:1. Jan 17, 2017 · More detailed answer: After some testing and reading the docs it's obvious that there is no way to mimic the dockerfile or docker-compose entrypoint behavior with docker run. The above command will create a new container with the specified name from the specified docker image. sh RUN source /env. Aug 23, 2015 · The question as I interpreted it is that it is intended for the host to run the script, not the container. Or if you want to negate the exit status of the command. Here is main process of container #!/bin/bash cd /home/docker exec pdf2pdfocr. When running containers, you often want to run commands in order to have access to a Shell instance or to start a CLI to manage your servers. Apr 7, 2022 · you have three main ways to run a command after the container starts: with docker exec -d someContainer some command from the command line, with CMD ["some", "command"] from your Dockerfile; with command: some command from a docker-compose file; if none of these is working for you, probably, you are doing something wrong. Dec 26, 2023 · Learn how to run a bash script in a Docker container with this step-by-step guide. sh /root # execute the script inside the container RUN /root/provision. 1? I really need a console in the container and I already despaired of running it Dec 6, 2017 · To initialize SearchGuard (create internal users and assign roles). sh from the folder /root/FrMG_Files. Output a list of space-separated environment variables in the specified container: Jul 3, 2014 · As suggested by Abel Muiño in comments, this may have been fixed in more recent Docker versions (I'm currently running 0. docker commit mediainfo_docker mediainfo_docker_with_scripts May 21, 2022 · The docker ps command takes a -f / --filter option to locate the desired container. This can be achieved using ENTRYPOINT & CMD. I need to start an application inside of the container, at container runtime. Mar 2, 2019 · Here are the docker commands I used to run the docker image: docker run --rm to-infinity-1 infinite-loop; docker run --rm -it to-infinity-2 infinite-loop; docker run --rm -d to-infinity-3 infinite-loop, then run docker attach on to-infinity-3; All of the above commands fail to stop and exit the infinite loop after executing ctrl+c directly. 1). I need to run the script init_sg. You can use it or just the 2/3 first characters to go into your container using: docker exec -it container_id /bin/bash Jul 18, 2018 · I want to write a shell script that enters into a running docker container, edits a specific file and then exits it. 9. This is for a build script. Apr 30, 2019 · I'm creating an image that has a similar problem like the following docker project: Dockerfile FROM alpine:3. And then I run the image as: docker run -it my-node bash But the script is not executed. /script. Apr 15, 2017 · To start a container and enter bash, just try: docker run -it ubuntu Then you'll be brought into the container shell. May 19, 2020 · docker exec command can be used to execute a SHELL script inside a docker container after when it is copied to a location inside the container. , an image reference that Docker uses as a template for building and running a container: docker run [image] For example, executing the following command runs a container based on the hello-world image: docker run . Jan 29, 2015 · A docker container exits when its main process finishes. sh command, everything works fine. Dec 6, 2023 · The 'docker run bash' command is used to start a new Docker container and run a Bash shell inside it. It is useful for synchronizing the spin-up of interdependent services, such as linked docker containers. Mar 26, 2018 · standard_init_linux. Dec 29, 2022 · The docker run subcommand strangely does not accept env files formatted as valid BASH ("Shell") scripts so it considers surrounding quotes and double quotes as part of the value of environment variables, so the container will get the value of (in an env file, for example) When a Docker container is run, it runs the ENTRYPOINT (only), passing the CMD as command-line parameters, and when the ENTRYPOINT completes the container exits. This creates and starts a container named mycontainer from an alpine image with an sh shell as its main process. So coming back to your question: docker container run -it --name prep fedora:37 bash. Since it is a pure bash script, it does not have any external dependencies". 3 COPY . sh /env. When you run bash in a docker container, that shell is in a container. However, the -a option displays all the containers, including the running and stopped ones: $ docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 789386223d03 image1:6. Step 4: You can also pass the CMD arguments at the end of the docker run command. I don't know enough about hadoop to tell you how to do it in this case, but you need to either leave something running in the foreground or use a process manager such as runit or supervisord to run the processes. Alright, enough background. Jun 3, 2015 · a) create container from ubuntu image and run a bash terminal. Here is the basic syntax: docker exec -it <container name or ID> bash Apr 19, 2022 · In either case, you are just running a container from the desired image and then running either /bin/bash or sh with the -c flag, that allows you to define the command to run from a string. My initial attempt was this - Create run. Try with: Mar 19, 2024 · I want to use a python script to start docker container and then run a set of commands. sh && …', or you could even go so far as to avoid bashisms (like source) entirely, and instead opt to only ever use valid POSIX equivalents, e. 1-alpine. So docker run is not the answer. from Nov 3, 2023 · Accessing the Bash Shell in a Docker Container. Aug 9, 2020 · We have a Docker container, which we construct dynamically. # Use your own image. I have made a script file called bt. I need to run a sh script when on docker run using some env variables defined in the compose file but i cannot find the right syntax. Here is my bash script to automate script execution inside container, after copying them, all using docker commands. sh. docker run --name demo -d script-demo. Paste the following command Jan 17, 2014 · You can use wait-for-it, "a pure bash script that will wait on the availability of a host and TCP port. You can check the container logs using the following command. Ask Question Asked 5 years, 7 months ago. If I run the same script after the container started w/ the default CMD, it works. $ docker run -i -t ubuntu:14. But if I run the container by docker run -it IMAGE_NAME bash, then manually run workspace/launch. sh after the container startup. import docker # Initialize the Docker client client = docker. The container name is optional. The --isolation=<value> option sets a container's isolation technology. The host may be local or remote. The docker container run command is used to create Apr 10, 2018 · Thanks melpomene. The -d option (shorthand for --detach) sets the container to run in the background, in detached mode, with a pseudo-TTY attached (-t). This will start a new bash process in an already running container. 04 /bin/bash b) Inside the terminal install curl # apt-get update # apt-get install curl c) Exit the container terminal # exit d) Take a note of your container id by executing following command : $ docker ps -a e) save container as new image May 11, 2015 · For example, to run bash inside a container: docker exec -it <mycontainer> sh Of course, Opener is a set of python scripts wrapped-up to a docker image. As with all Docker images, these likely also contain other software which may be under other licenses (such as Bash, etc from the base distribution, along with any direct or indirect dependencies of the primary software being contained). docker create -it --name new-container <image> # Now start it. e. Jul 11, 2024 · docker run is an alias for the docker container run command. This is a popular Linux container image that uses Alpine Linux, a lightweight, minimal Linux distribution. The docker exec command provides a straightforward method for running scripts inside Docker containers. docker start new-container # Now attach bash session. We use the -d flag to detach the container from our terminal and run it in the background. There's no advantage to re-running the convenience script. Mar 18, 2019 · The node in this image is managed by nvm which has been installed and its script has been set on /root/. Re-running it can cause issues if it attempts to re-install repositories which already exist on the host machine. With the rise of Docker for containerizing applications, developers need ways to execute shell scripts within containers. If I start the container manually, removing the internal script execution at startup, I can then login to the container, and execute this script manually, without any issues. Aug 24, 2022 · However, if I run the container in the interactive mode and enter it using docker exec -it container_name bash and run the script, it works. 0 "/bin/bash" 5 minutes ago Exited (0) 5 minutes ago trusting_mclean Apr 13, 2023 · You can specify the name of the image and any other arguments you want to include. sh: f() { echo "Sleep" sleep 10 echo "Done" } f Dockerfile: FROM alping COPY start. The problem is that you're launching your docker with -t -i, and what you want is a background execution and check it interactively. mediainfo_docker:/opt # save container with the new image, which contains all scripts. bash -c 'source /script. /env. 8 # put the script in the /root directory of the container COPY provision. Let‘s dive into the main event – running bash commands inside containers. go:195: exec user process caused "no such file or directory" means that either the executable is not found or one of its required libraries is not found, which makes debugging the Dockerfile quite difficult. But, if you're temporarily stuck like me with an older version, I did find a decent workaround to check if the container started by using docker inspect. You can add an else and elif clause in that. docker container ls Aug 6, 2023 · docker build -t script-demo . I am very new to docker and am trying to get my head around it, I am used to running Linux and am struggling to get my head around having separate containers running different services and how they talk to each other:-) I need Dec 3, 2015 · The downside of using docker exec is that it requires a running container, so docker inspect -f might be handy if you're unsure a container is running. This is a dirty hack, not a solution. Docker runs processes in isolated containers. sh EXPOSE 80 # Default command CMD ["/bin/bash"] I am looking to pragmatically stop and delete a Docker container if it is running. sh #!/bin/bash for i in {1. Conclusion # Docker is the standard for packaging and deploying applications and an essential component of CI/CD, automation, and DevOps. Or to enter a running container, use exec instead: docker exec -it <container-name-or-id> bash Jan 6, 2020 · You can run a command in a running container using docker exec [OPTIONS] CONTAINER COMMAND [ARG]: docker exec mycontainer /path/to/test. sh file. sh & And after docker run <MY_IMAGE> the docker status is Exited (0) I'm trying also to change start. -d just lets you run the container in the background. . Update : In the dockerfile I already have the CMD command : Mar 7, 2020 · beyond your main question, note that your Dockerfile is suboptimal, because it uses the multi-stage build feature of Docker (namely, you have several FROM in your Dockerfile), while it seems this feature is unneeded for your use case. Oct 9, 2019 · First thing, you are not allocating tty in the docker run command and the docker container dies soon after converting files. Bash is free software, distributed under the terms of the GNU General Public License, version 3 ⁠. Aug 9, 2018 · Try to run MySQL in daemon mode which should prevent it from assuming the process is complete: ENTRYPOINT ["mysqld"] EDIT: I took a look at the official mysql Docker image and that's how they do it there. But, when I attempt to run this same May 1, 2017 · docker info to check with a bash script if docker engine is running. sh /tmp CMD /tmp/start. I can run the script without problems from within the container (starting the container with the -it switch) with the command . How to run docker container. From inside the container a run the script as: /bin/bash usr/local/bin/setENV. if ! docker run container/myContainer:latest; then do_stuff fi Aug 14, 2020 · About your concrete question. sh CMD env env. In its most basic form, the command requires only one argument, i. For copying the script from a location on the Aug 6, 2023 · In this guide we will look in to running custom scripts inside a docker container with command line arguments. sh to: May 26, 2018 · docker image build -t my-node . bashrc file. Specify isolation technology for container (--isolation) This option is useful in situations where you are running Docker containers on Windows. Once the container has been launched, you can run the Bash script inside the container using the “docker run” command. The most common method is using the docker exec command. sh TEST=test123 I built the Feb 27, 2017 · I would like to run a bash script to set some values but I am unsure how best to do this. The Daemon determines the default, and is 10 seconds for Linux containers, and 30 seconds for Windows containers. 15. This command allows you to interact with the container in real-time, making it a powerful tool for debugging and development. Shell scripts are ubiquitous in Linux environments for automating administrative tasks, workflows, and processes. docker logs demo -f. 10} do Dec 31, 2019 · I have several running containers configured, and they are all running as intended, with one exception. Uninstall Docker Engine Aug 22, 2020 · Hi, I need to use a program written by someone else within a Docker container. I didn't even notice that @MohammedNoureldin has the right answer and is almost voted over the accepted answer. Once the image has been built, you can launch the container using the “docker run” command. You can also refer to this link for more info. py "$@" Dec 24, 2019 · 34. It sits in a folder /root/FrMG_Files/. Founded in 2010 by Solomon Hykes, Docker is a containerization platform that provides features in order to install, deploy, start and stop containers. It can also be used with flags, such as docker run -it ubuntu bash . I would docker run -td <image> Here is what the flags do (according to docker run --help):-d, --detach=false Run container in background and print container ID -t, --tty=false Allocate a pseudo-TTY The most important one is the -t flag. Note that I am using docker for windows. Take the following example. When you execute docker run, the container process that runs is isolated in that it has its own file system, its own networking, and its own isolated process tree separate from the host. Apr 5, 2018 · How to run /bin/bash in a docker container that was started with the -d option, for example: sudo docker run -P --name test-cnt3 -d base-tst:0. If you want to run a docker container with a certain image and a specified command, you can do it in this fashion: docker run -it -d --name container_name image_name bash. I guess I could add the script to run to my bashrc file but that seems wrong. No start but named for future reference. sh And working fine. FROM centos:6. But I don't know why it can't find the nodejs commands. If your script is being run by the sh shell, but you want bash, the proper solution is either to have the sh process invoke bash as a one-off, e. Something like allowing the container to ssh to the host and run the script is the answer. So it won't have the command history from outside of the container, that history is maintained on the host filesystem. docker exec -it new-container bash Main advantage is you can attach several bash sessions to single container. Mar 18, 2024 · docker ps shows only the running images. Jun 6, 2020 · In this example, we provided a command (/bin/bash) as an argument to the docker run command that was executed instead of the one specified in the Dockerfile. 5K. I'm trying to run script in background when the container creare (inside container). To run a disposable new container, you can simply attach a tty and standard input: docker run --rm -it --entrypoint bash <image-name-or-id> Or to prevent the above container from being disposed, run it without --rm. Dec 30, 2022 · 2 stage: I want to use that image and only to change packages I want to use bash script with some variables pass to Dockerfile to tell the container which package to download. sh script ends. I have the following simple start. # Start docker container docker create --name mediainfo_docker centos:latest # copy script files docker cp . Mar 10, 2020 · if docker run container/myContainer:latest; then do_stuff fi The above example will run/execute do_stuff if the exit status of docker run is zero which is a success. Aug 3, 2014 · # Just create interactive container. . g. In this case it will exit when your start-all. Running the Bash Script. Sep 23, 2015 · A simple run_container might be: #!/bin/bash echo "argc = ${#*}" echo "argv = ${*}" What I want to do is, after "dockering" this I would like to be able to startup this container with the parameters on the docker command line like this: docker run image_name p1 p2 p3 and have the run_container script be run with p1 p2 p3 as the parameters. /bt. Also, by setting --entrypoint '' , you are overriding the default entrypoint set on the Dockerfile. In this comprehensive guide, we‘ll cover everything Aug 26, 2020 · docker run -d repository docker run -d repository:tag docker run -d image_id Then you can check your container is running using. We need to copy a Bash script from the host machine to the container and then to execute this script in the container, but from the host machine. log" This command creates a new Docker container from the official alpine image. sh which runs the third party program with the correct options.