I have not been able to find a way to up/down just one container in a docker-compose.yml file. I can off-course start and stop a single container, but I cannot make changes to a containers configuration between restarts (environment variables, mount points etc.)
What am I missing here? What is the best practice in this case?
26 Answers
I had this need recently and solved it by having a separate docker-compose-production.yml file to deal with tweaks. Then remember to launch with docker-compose -f docker-compose-production.yml...
I found this to have the same affect as docker-compose down for a single service:
docker-compose rm -s -v yourService
Usage: rm [options] [SERVICE...]
Options:
-s, --stop Stop the containers, if required, before removing
-v Remove any anonymous volumes attached to containers
You can condense all the flags into a single - param: docker-compose rm -sv yourService
I would suggest you check out this excellent thread on stackoverflow.com. The quick answer here to rebuild the single container and restart it is:
docker-compose up -d --build workerThis would be the ideal solution if, for example, your changes involved your Dockerfile and not just docker-compose.ymll
3You can use
$ docker-compose -f docker-compose.yml up yourServiceto start just yourService and all dependencies required by it.
So if yourService depends on mysql container, the above command would start both the containers.
As far as others shows how to start/up containers this is how you can restart and stop them separately:
for restarting specific container:docker-compose restart <container_name>docker-compose restart -t 10 <container_name> # Container will restart after 10 seconds
for only just stop container:docker-compose stop <container_name>docker-compose stop -t 10 <container_name> # Container will restart after 10
and final word is for those who want make changes without downtime, you can build new image and make changes without any stop start with this command but it will build all Dockerfile in docker-compose.yml file:docker-compose up -d --build
There's no need to delete anything. To address the OP's question: You need to rebuild the image then use up to replace the container with the newly configured imaged.
IMPORTANT: notice that the new image will automatically be tagged with latest.
Step 1: Edit Docker file
Step 2: docker-compose build
Step 3: docker-compose upThe docker-compose up will leave all the unchanged containers alone and replace only the containers that have a newly created image.
