bug: `git-clone` did not parse and add port to `ssh-keyscan` command

[LazyGeniusMan]

Issue

PR #942 add feature to add repo url to known host, but it only parse the host and did not parse the port when running ssh-keyscan command. This make the known host added for port 22 instead.

My use case is using self hosted gitea/forgejo, because port 22 already used by the host for ssh into the host machine I use port 2222 instead for the git ssh. The repo URL is something like this:

ssh://git@forgejo.domain.tld:2222/LazyGeniusMan/test-repo.git

The current parsing is :

registry/registry/coder/modules/git-clone/run.sh

Line 56 in 6be121e

SSH_HOST=$(echo "$REPO_URL" | sed -E 's|^(ssh://)?([^@/]+@)?([^:/]+).*|\3|')

The result for repo URL above is : forgejo@domain.tld

Then the value used in:

registry/registry/coder/modules/git-clone/run.sh

Line 64 in 6be121e

if KNOWN_HOST_ENTRY=$(ssh-keyscan -H -t rsa,ecdsa,ed25519 "$SSH_HOST" 2> /dev/null) && [ -n "$KNOWN_HOST_ENTRY" ]; then

Proposed Fix

1. Parse the port from ssh repo url
2. Pass the -p arg to ssh-keyscan command

[linear-code]

ENG-3262