yudapc / docker-env-app

Implementation Docker Environment Variable

docker-env-app

Implementation Docker Environment Variable

Challenge

This is sample implementation docker environment variable on docker container. The challenge is how to update env on the fly without rebuild docker image

Requirements

- nodejs 14.16.0
- pm2

Slide

https://docs.google.com/presentation/d/1NLNOzlFCWZqfySu25uenRoFpE87TM_63RfS77rUtpzU/edit?usp=sharing

Conclusion

There are two steps to update ENV:

1. Single Env:

docker exec -i -e VAR=value <container-id> sh -c "pm2 restart <app-name> --update-env"

Sample:

docker exec -i -e INFO=test 81bf1b3d791c sh -c "pm2 restart app --update-env"

2. File:

docker exec -i --env-file=<./path/file> <container-id> sh -c "pm2 restart <app-name> --update-env"

Sample:

docker exec -i --env-file=.env 81bf1b3d791c sh -c "pm2 restart app --update-env"