I am trying to use this command in docker run
docker run -p 80:80 -v $(pwd)/php-docker/src:/var/www/html/ php-hello-world
but it is not working. Is there any way to use pwd in docker run
yes, you can use PWD, use it as variable $PWD instead subshell $(pwd)
docker run -p 80:80 -v $PWD/php-docker/src:/var/www/html/ php-hello-world
Related
I was following this guide on customizing MySQL databases in Docker, and ran this command multiple times after making tweaks to the mounted sql files:
docker run -d -p 3306:3306 --name my-mysql -v /Users/pneedham/dev/docker-testing/sql-scripts:/docker-entrypoint-initdb.d/ -e MYSQL_ROOT_PASSWORD=supersecret -e MYSQL_DATABASE=company mysql
On all subsequent executions of that command, I would see an error like this:
docker: Error response from daemon: Conflict. The container name "/my-mysql" is already in use by container "9dc103de93b7ad0166bb359645c12d49e0aa4a3f2330b5980e455cec24843663". You have to remove (or rename) that container to be able to reuse that name.
See 'docker run --help'.
What I'd like to know is whether that docker run command can be modified to auto-kill the previous container (if it exists)? Or if there is a different command that has the same desired result.
If I were to create a shell script to do that for me, I'd first run docker ps -aqf "name=mysql" and if there is any output, use that resulting container ID by running docker rm -f $containerID. And then run the original command.
docker run command has a --rm arguments that deletes the container after the run is completed. see the docs . So, just change your command to
docker run --rm -d -p 3306:3306 --name my-mysql -v /Users/pneedham/dev/docker-testing/sql-scripts:/docker-entrypoint-initdb.d/ -e MYSQL_ROOT_PASSWORD=supersecret -e MYSQL_DATABASE=company mysql
I am trying to run the following command
docker run -p 3000:3000 -v/app/node_modules -v $(pwd):/app 2ef0206fcf99
I am getting the following error
docker: Error response from daemon: create $(pwd): "$(pwd)" includes invalid characters for a local volume name, only "[a-zA-Z0-9][a-zA-Z0-9_.-]" are allowed. If you intended to pass a host directory, use absolute path.
How can I fix the issue?
1) Using Windows Powershell, following works for me:
docker run --rm -it -v ${pwd}:/mydir nginx:latest bash
Note:
I have used curly braces around pwd instead of small braces
2) Using Git Bash, following syntax should work:
winpty docker run --rm -it -v "/$PWD":/mydir nginx:latest bash
Note:
If you do not use winpty at the start of the command, you will get error message: the input device is not a TTY. If you are using mintty, try prefixing the command with 'winpty'
Also notice the / before $PWD. Without the /, it will not throw error but i noticed that it didn't mount the directory.
I also had the same issue on windows make sure that you put "$PWD" something like this so your command should be something like this
docker run --rm -it -p 3000:3000 -v "$PWD:/app" 2ef0206fcf99
or another way is
docker run --rm -it -p 3000:3000 --volume="$PWD:/app" 2ef0206fcf99
I would like to run this command:
docker run docker-mup deploy --config .deploy/mup.js
where docker-mup is the name the image, and deploy, --config, .deploy/mup.js are arguments
My question: how to mount a volume such that .deploy/mup.js is understood as the relative path on the host from where the docker run command is run?
I tried different things with VOLUME but it seems that VOLUME does the contrary: it exposes a container directory to the host.
I can't use -v because this container will be used as a build step in a CI/CD pipeline and as I understand it, it is just run as is.
I can't use -v because this container will be used as a build step in a CI/CD pipeline and as I understand it, it is just run as is.
Using -v to expose your current directory is the only way to make that .deploy/mup.js file inside your container, unless you are baking it into the image itself using a COPY directive in your Dockerfile.
Using the -v option to map a host directory might look something like this:
docker run \
-v $PWD/.deploy:/data/.deploy \
-w /data \
docker-mup deploy --config .deploy/mup.js
This would map (using -v ...) the $PWD/.deploy directory onto /data/.deploy in your container, set the current working directory to /data (using -w ...), and then run deploy --config .deploy/mup.js.
Windows - Powershell
If you're inside the directory you want to bind mount, use ${pwd}:
docker run -it --rm -d -p 8080:80 --name web -v ${pwd}:/usr/share/nginx/html nginx
or $pwd/. (forward slash dot):
docker run -it --rm -d -p 8080:80 --name web -v $pwd/.:/usr/share/nginx/html nginx
Just $pwd will cause an error:
docker run -it --rm -d -p 8080:80 --name web -v $pwd:/usr/share/nginx/html nginx
Variable reference is not valid. ':' was not followed by a valid variable name character. Consider using ${} to
delimit the name
Mounting a subdirectory underneath your current location, e.g. "site-content", $pwd/ + subdir is fine:
docker run -it --rm -d -p 8080:80 --name web -v $pwd/site-content:/usr/share/nginx/html nginx
In my case there was no need for $pwd, and using the standard current folder notation . was enough. For reference, I used docker-compose.yml and ran docker-compose up.
Here is a relevant part of docker-compose.yml.
volumes:
- '.\logs\:/data'
I have a bash file that runs my apps docker image using docker run -it --network test_network -p 8000:8000 testApp but I also need to run my mysql image using docker run -it --network test_network -p 3308:3308 mysql/mysql-server
Normally I open a separate terminal window manually to run each one but I'm trying to edit my bash script so that it can do both for me. Not sure how though?
You can run both in the detached mode. That will not block the script and allow you to run both together. For that, you need to use the -d or --detach flag.
docker run --detach -it --network test_network -p 8000:8000 testApp
docker run --detach -it --network test_network -p 3308:3308
mysql/mysql-server
Edit:
While the approach mentioned above works, it is better to use docker compose to run multiple containers.
I want to mount a volume and add it to the container's PATH environment variable. I've tried the following and none is working.
docker run -it -v $(PWD):/app -e PATH=$PATH:/app/bin debian:jessie bash
docker run -it -v $(PWD):/app -e PATH='$PATH:/app/bin' debian:jessie bash
docker run -it -v $(PWD):/app -e PATH='$$PATH:/app/bin' debian:jessie bash
docker run -it -v $(PWD):/app -e PATH='\$PATH:/app/bin' debian:jessie bash
How do I append the mounted volume to PATH?
If you you use -e option, the $PATH value is the PATH of the host instead of the container.
You can do it like this:
docker run -it -v $(PWD):/app debian:jessie bash -c 'export PATH=$PATH:/app/bin; bash'
Within the docker command line, you can't get "what will be the value of $PATH at runtime". Thus, you cannot append a PATH to the PATH variable, with docker's -e flag. To achieve what you want to do, you will need to do that in a script that will get executed as the cmd / entrypoint of your container.
You can define a fixed Path for your imported Apps and add the new Path to the Apps into the Environment-Variable "Path"
Let's take your Path "/app". In your Dockerfile add the following Line:
ENV PATH=${PATH}:/app/bin
Build your modified Docker
Now you can access all Apps located under < external Directory >/bin that you mount to "/app" via
-v <external Directory>:/app
You can use a shell script (let's call it run.sh):
#/bin/bash
PATH=$PATH:/app/bin
"$#"
and call it from docker:
docker run -it -v $(PWD):/app debian:jessie /app/run.sh bash