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update ssh passthrough (#14403)

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Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
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Patrick Schratz 2021-01-21 03:25:18 +01:00 committed by GitHub
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AI 샘플 코드 생성 중입니다

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docs/content/doc/installation/with-docker.en-us.md
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@ -345,19 +345,23 @@ ports:
- "127.0.0.1:2222:22"
```
In addition, `/home/git/.ssh/authorized_keys` on the host needs to be modified. It needs to act in the same way as `authorized_keys` within the Gitea container. Therefore add
In addition, `/home/git/.ssh/authorized_keys` on the host needs to be modified. It needs to act in the same way as `authorized_keys` within the Gitea container. Therefore add the public key of the key you created above ("Gitea Host Key") to `~/git/.ssh/authorized_keys`.
This can be done via `echo "$(cat /home/git/.ssh/id_rsa.pub)" >> /home/git/.ssh/authorized_keys`.
Important: The pubkey from the `git` user needs to be added "as is" while all other pubkeys added via the Gitea web interface will be prefixed with `command="/app [...]`.
The file should then look somewhat like
```bash
command="/app/gitea/gitea --config=/data/gitea/conf/app.ini serv key-1",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty ssh-rsa <YOUR_SSH_PUBKEY>
# SSH pubkey from git user
ssh-rsa <Gitea Host Key>
# other keys from users
command="/app/gitea/gitea --config=/data/gitea/conf/app.ini serv key-1",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty <user pubkey>
```
and replace `<YOUR_SSH_PUBKEY>` with a valid SSH public key of yours.
In addition the public key of the `git` user on the host needs to be added to `/home/git/.ssh/authorized_keys` so authentication against the container can succeed: `echo "$(cat /home/git/.ssh/id_rsa.pub)" >> /home/git/.ssh/authorized_keys`.
Here is a detailed explanation what is happening when a SSH request is made:
1. A SSH request is made against the host using the `git` user, e.g. `git clone git@domain:user/repo.git`.
1. A SSH request is made against the host (usually port 22) using the `git` user, e.g. `git clone git@domain:user/repo.git`.
2. In `/home/git/.ssh/authorized_keys` , the command executes the `/app/gitea/gitea` script.
3. `/app/gitea/gitea` forwards the SSH request to port 2222 which is mapped to the SSH port (22) of the container.
4. Due to the existence of the public key of the `git` user in `/home/git/.ssh/authorized_keys` the authentication host → container succeeds and the SSH request get forwarded to Gitea running in the docker container.