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Add DOCKER_HOST documentation (#74)

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* add DOCKER_HOST documentation

* add which endpoints are required for DOCKER_HOST

* Update README.md

Co-authored-by: Frederik Ring <frederik.ring@gmail.com>
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Rajan Patel 2022-02-22 02:00:26 -05:00 committed by GitHub
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README.md
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@ -27,6 +27,7 @@ It handles __recurring or one-off backups of Docker volumes__ to a __local direc
- [Using with Docker Swarm](#using-with-docker-swarm)
- [Manually triggering a backup](#manually-triggering-a-backup)
- [Update deprecated email configuration](#update-deprecated-email-configuration)
- [Using a custom Docker host](#using-a-custom-docker-host)
- [Recipes](#recipes)
- [Backing up to AWS S3](#backing-up-to-aws-s3)
- [Backing up to Filebase](#backing-up-to-filebase)
@ -321,6 +322,13 @@ You can populate below template according to your requirements and use it as you
# NOTIFICATION_LEVEL="error"
########### DOCKER HOST
# If you are interfacing with Docker via TCP you can set the Docker host here
# instead of mounting the Docker socket as a volume. This is unset by default.
# DOCKER_HOST="tcp://docker_socket_proxy:2375"
########### EMAIL NOTIFICATIONS
# ************************************************************************
@ -616,6 +624,15 @@ After:
NOTIFICATION_URLS=smtp://me:secret@posteo.de:587/?fromAddress=no-reply@example.com&toAddresses=you@example.com
```
### Using a custom Docker host
If you are interfacing with Docker via TCP, set `DOCKER_HOST` to the correct URL.
```ini
DOCKER_HOST=tcp://docker_socket_proxy:2375
```
In case you are using a socket proxy, it must support `GET` and `POST` requests to the `/containers` endpoint. If you are using Docker Swarm, it must also support the `/services` endpoint.
## Recipes
This section lists configuration for some real-world use cases that you can mix and match according to your needs.