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docs: document plugin properties migrated from env vars

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Per-plugin management docs now describe the properties introduced by the env-var-to-property migration in PR #8498, and stale prose and command-output examples that still referenced the old `DOKKU_*` names have been refreshed. The deprecated env vars table moves out of `environment-variables.md` and into the 0.38.0 migration guide, where it functions as a one-time pointer for upgrading users rather than ongoing reference material.
This commit is contained in:
Jose Diaz-Gonzalez
2026-04-30 17:02:39 -04:00
parent 823b37e383
commit cb0f729299
11 changed files with 181 additions and 48 deletions
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10
docs/deployment/builders/dockerfiles.md
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@@ -185,7 +185,7 @@ You would adjust the cache directory for whatever application cache you have, e.
### Customizing the run command
By default no arguments are passed to `docker run` when deploying the container and the `CMD` or `ENTRYPOINT` defined in the `Dockerfile` are executed. You can take advantage of docker ability of overriding the `CMD` or passing parameters to your `ENTRYPOINT` setting `$DOKKU_DOCKERFILE_START_CMD`. Let's say for example you are deploying a base Node.js image, with the following `ENTRYPOINT`:
By default no arguments are passed to `docker run` when deploying the container and the `CMD` or `ENTRYPOINT` defined in the `Dockerfile` are executed. You can take advantage of docker's ability to override the `CMD` or pass parameters to your `ENTRYPOINT` by setting the `dockerfile-start-cmd` property on the `ps` plugin. Let's say for example you are deploying a base Node.js image, with the following `ENTRYPOINT`:
```Dockerfile
ENTRYPOINT ["node"]
@@ -194,10 +194,14 @@ ENTRYPOINT ["node"]
You can do:
```shell
dokku config:set node-js-app DOKKU_DOCKERFILE_START_CMD="--harmony server.js"
dokku ps:set node-js-app dockerfile-start-cmd "--harmony server.js"
```
To tell Docker what to run.
To tell Docker what to run. Pass an empty value to clear the override:
```shell
dokku ps:set node-js-app dockerfile-start-cmd
```
### Procfiles and multiple processes