add backup option for gitea

templates/brain_backup.j2

@@ -199,6 +199,32 @@ fi
 ## end of postresql ##
 {% endif %}
 
+{% if backup_gitea_enabled is sameas true %}
+## gitea ##
+backup_gitea_config="{{ backup_gitea_config | default('/data/gitea/conf/app.ini') }}"
+backup_gitea_docker_enabled="{{ (backup_gitea_docker_enabled | default(false)) | ternary('true', 'false') }}"
+backup_gitea_docker_container="{{ backup_gitea_docker_container | default('') }}"
+backup_gitea_docker_workdir="{{ backup_gitea_docker_workdir | default('') }}"
+
+mkdir -p "$backup_dir/$today/gitea"
+
+if [ "$backup_gitea_docker_enabled" = "true" ]; then
+    if [ -z "$backup_gitea_docker_container" ]; then
+        echo "Gitea Docker mode enabled but container name is empty: exiting."
+        exit 1
+    fi
+
+    if [ -z "$backup_gitea_docker_workdir" ]; then
+        backup_gitea_docker_workdir="$backup_dir/$today/gitea"
+    fi
+
+    /usr/bin/docker exec -u git -i -w "$backup_gitea_docker_workdir" "$backup_gitea_docker_container" bash -c "/usr/local/bin/gitea dump -c \"$backup_gitea_config\" -q --type tar.gz"
+else
+    sudo su -s /bin/bash - git -c "cd $backup_dir/$today/gitea && /usr/local/bin/gitea dump -c \"$backup_gitea_config\" -q --type tar.gz"
+fi
+## end of gitea ##
+{% endif %}
+
 # purge old backups
 find $backup_dir -type d -ctime +$backup_local_retention -exec rm -rf {} \;
 
@@ -228,6 +254,9 @@ mysql.pxar:$backup_dir/$today/mysql \
 {% if backup_mariadb_enabled is sameas true %}
 mariadb.pxar:$backup_dir/$today/mariadb \
 {% endif %}
+{% if backup_gitea_enabled is sameas true %}
+gitea.pxar:$backup_dir/$today/gitea \
+{% endif %}
 --rate ${PBS_RATE}
 ## end of send to PBS ##