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Add documentation for proxy ports scheme handling

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Closes #2384

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This commit is contained in:
Jose Diaz-Gonzalez
2016-08-26 15:28:51 -04:00
parent 600d872b76
commit ab8063e88a
4 changed files with 22 additions and 4 deletions
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docs/deployment/methods/dockerfiles.md
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@@ -17,7 +17,7 @@ To use a dockerfiles for deployment, commit a valid `Dockerfile` to the root of
Dokku will extract all tcp ports exposed using the `EXPOSE` directive (one port per line) and setup nginx to proxy the same port numbers to listen publicly. If you would like to change the exposed port, you should do so within your `Dockerfile` and app.
> NOTE: Nginx does not support proxying UDP. UDP ports can be exposed by disabling the nginx proxy with `dokku proxy:disable myapp`
> Note: Nginx does not support proxying UDP. UDP ports can be exposed by disabling the nginx proxy with `dokku proxy:disable myapp`
If you do not explicitly `EXPOSE` a port in your `Dockerfile`, dokku will configure the nginx proxy to listen on port 80 (and 443 for TLS) and forward traffic to your app listening on port 5000 inside the container. Just like buildpack apps, you can also use the `$PORT` environment variable in your app to maintain portability.