Gitea: add SSH port 2222, fix Traefik network, update SSH docs

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/ssh-setup.md

@@ -0,0 +1,46 @@
+# SSH Key Setup for Homelab Git
+
+## 1. Generate key with custom name
+
+```bash
+ssh-keygen -t ed25519 -C "miczek.r@gmail.com" -f ~/.ssh/id_ed25519_private -N ""
+```
+
+Creates:
+- `~/.ssh/id_ed25519_private` (private – never share)
+- `~/.ssh/id_ed25519_private.pub` (public – add to Gitea & GitHub)
+
+## 2. Add to SSH config
+
+Append to `~/.ssh/config`:
+
+```
+Host git.zea.lt
+  HostName 127.0.0.1
+  Port 2222
+  IdentityFile ~/.ssh/id_ed25519_private
+  IdentitiesOnly yes
+
+Host github.com
+  IdentityFile ~/.ssh/id_ed25519_private
+  IdentitiesOnly yes
+```
+
+## 3. Add public key to remotes
+
+```bash
+cat ~/.ssh/id_ed25519_private.pub
+```
+
+- **Gitea:** Settings → SSH / GPG Keys → Add Key
+- **GitHub:** Settings → SSH and GPG keys → New SSH key
+
+## 4. Trust host keys & push
+
+```bash
+ssh-keyscan github.com >> ~/.ssh/known_hosts
+ssh-keyscan git.zea.lt >> ~/.ssh/known_hosts
+
+cd /home/miczek/homelab
+git push -u origin main
+```

gitea/docker-compose.yml

@@ -7,13 +7,21 @@ services:
       - USER_UID=1000
       - USER_GID=1000
       - GITEA__server__ROOT_URL=https://git.zea.lt
+      - GITEA__server__SSH_PORT=2222
+    ports:
+      - "2222:22"
     volumes:
       - .:/data
     networks:
-      - homelab
+      - homelab_homelab
     labels:
       - "traefik.enable=true"
+      - "traefik.docker.network=homelab_homelab"
       - "traefik.http.routers.gitea.rule=Host(`git.zea.lt`)"
       - "traefik.http.routers.gitea.entrypoints=websecure"
       - "traefik.http.routers.gitea.tls.certresolver=leresolver"
       - "traefik.http.services.gitea.loadbalancer.server.port=3000"
+
+networks:
+  homelab_homelab:
+    external: true