feat: "exec" command to start processes inside remote containers (#139)

website/docs/9-cli-reference/uc_exec.md

@@ -0,0 +1,56 @@
+# uc exec
+
+Execute a command in a running service container
+
+## Synopsis
+
+Execute a command (interactive shell by default) in a running container within a service.
+If the service has multiple replicas, the command will be executed in a random container.
+	
+
+```
+uc exec [OPTIONS] SERVICE [COMMAND ARGS...] [flags]
+```
+
+## Examples
+
+```
+
+  # Start an interactive shell ("bash" or "sh" will be tried by default)
+  uc exec web-service
+
+  # Start an interactive shell with explicit command
+  uc exec web-service /bin/zsh
+
+  # List files in the specific container of the service
+  uc exec --container d792ea7347e5 web-service ls -la
+
+  # Pipe input to a command inside the service container
+  cat /var/log/app.log | uc exec -T web-service grep "ERROR"
+
+  # Run a task in the background (detached mode)
+  uc exec -d web-service /scripts/cleanup.sh
+```
+
+## Options
+
+```
+      --container string   ID of the container to exec into (default is the random container of the service)
+  -c, --context string     Name of the cluster context. (default is the current context)
+  -d, --detach             Detached mode: run command in the background
+  -h, --help               help for exec
+  -T, --no-tty             Disable pseudo-TTY allocation. By default 'uc exec' allocates a TTY when connected to a terminal.
+```
+
+## Options inherited from parent commands
+
+```
+      --connect string          Connect to a remote cluster machine without using the Uncloud configuration file. [$UNCLOUD_CONNECT]
+                                Format: [ssh://]user@host[:port] or tcp://host:port
+      --uncloud-config string   Path to the Uncloud configuration file. [$UNCLOUD_CONFIG] (default "~/.config/uncloud/config.yaml")
+```
+
+## See also
+
+* [uc](uc.md)	 - A CLI tool for managing Uncloud resources such as machines, services, and volumes.
+