ente/server/docs/publish.md
Manav Rathi 182fd89356
[server] Retain published image commit as branch instead of tag
Overwriting tags is clunky (besides being generally discouraged). e.g. pulling
the overwritten tags locally requires `git fetch --force --tags`. So instead use
the branch `server/ghcr` to point to the commit from which the latest published
ghcr docker image has been built
2024-12-30 13:58:08 +05:30

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# Publishing images
There are two different images we publish - internal and external.
## Internal
The internal images can be built and run by triggering the "Server (release)"
workflow. You can trigger it either from GitHub's UI on the Actions tab, or use
the following command:
gh workflow run server-release.yml
This will take the latest main, package it into a Docker image, and publish it
to our Scaleway registry. From there, we can update our production instances to
use this new image (see [deploy/README](../scripts/deploy/README.md)).
## External
Periodically, we can republish a new image from an existing known-to-be-good
commit to the GitHub Container Registry (GHCR) so that it can be used by folks
without needing to clone our repository just for building an image. For more
details about the use case, see [docker.md](docker.md).
To publish such an external image, firstly find the commit of the currently
running production instance.
curl -s https://api.ente.io/ping | jq -r '.id'
> We can publish from any arbitrary commit really, but by using the commit
> that's already seen production for a few days, we avoid externally publishing
> images with issues.
Then, trigger the "Publish (server)" workflow, providing it the commit. You can
trigger it either from GitHub's UI or using the `gh cli`. With the CLI, we can
combine both these steps too.
gh workflow run server-publish.yml -F commit=`curl -s https://api.ente.io/ping | jq -r '.id'`
Once the workflow completes, the resultant image will be available at
`ghcr.io/ente-io/server`. The image will be tagged by the commit SHA. The latest
image will also be tagged, well, "latest".
The workflow will also update the branch `server/ghcr` to point to the commit it
used to build the image. This branch will be overwritten on each publish, and
thus it `server/ghcr` points to the code from which the most recent ghcr docker
image for museum has been built.