Correctly refer to dev tags as nightly in the docker docs (#26004) (#26019)

Backport #26004 by @jolheiser

As title, `dev` tags are no longer used since we switched to `nightly`

Signed-off-by: jolheiser <john.olheiser@gmail.com>

docs/content/doc/installation/with-docker-rootless.en-us.md

@@ -67,7 +67,7 @@ sudo chown 1000:1000 config/ data/
 
 > If you don't give the volume correct permissions, the container may not start.
 
-For a stable release you could use `:latest-rootless`, `:1-rootless` or specify a certain release like `:{{< version >}}-rootless`, but if you'd like to use the latest development version then `:dev-rootless` would be an appropriate tag. If you'd like to run the latest commit from a release branch you can use the `:1.x-dev-rootless` tag, where x is the minor version of Gitea. (e.g. `:1.16-dev-rootless`)
+For a stable release you could use `:latest-rootless`, `:1-rootless` or specify a certain release like `:{{< version >}}-rootless`, but if you'd like to use the latest development version then `:nightly-rootless` would be an appropriate tag. If you'd like to run the latest commit from a release branch you can use the `:1.x-nightly-rootless` tag, where x is the minor version of Gitea. (e.g. `:1.16-nightly-rootless`)
 
 ## Custom port
 

docs/content/doc/installation/with-docker.en-us.md

@@ -36,7 +36,7 @@ image as a service. Since there is no database available, one can be initialized
 Create a directory like `gitea` and paste the following content into a file named `docker-compose.yml`.
 Note that the volume should be owned by the user/group with the UID/GID specified in the config file.
 If you don't give the volume correct permissions, the container may not start.
-For a stable release you can use `:latest`, `:1` or specify a certain release like `:{{< version >}}`, but if you'd like to use the latest development version of Gitea then you could use the `:dev` tag. If you'd like to run the latest commit from a release branch you can use the `:1.x-dev` tag, where x is the minor version of Gitea. (e.g. `:1.16-dev`)
+For a stable release you can use `:latest`, `:1` or specify a certain release like `:{{< version >}}`, but if you'd like to use the latest development version of Gitea then you could use the `:nightly` tag. If you'd like to run the latest commit from a release branch you can use the `:1.x-nightly` tag, where x is the minor version of Gitea. (e.g. `:1.16-nightly`)
 
 ```yaml
 version: "3"