feat: add silent flag to shell (#437)

* feat: add silent flag

* Update shell.rs

* fix: lint

src/commands/shell.rs

@@ -28,6 +28,10 @@ pub struct Args {
     /// Service to pull variables from (defaults to linked service)
     #[clap(short, long)]
     service: Option<String>,
+
+    /// Open shell without banner
+    #[clap(long)]
+    silent: bool,
 }
 
 pub async fn command(args: Args, _json: bool) -> Result<()> {
@@ -103,7 +107,9 @@ pub async fn command(args: Args, _json: bool) -> Result<()> {
         _ => vec![],
     };
 
-    println!("Entering subshell with Railway variables available. Type 'exit' to exit.\n");
+    if !args.silent {
+        println!("Entering subshell with Railway variables available. Type 'exit' to exit.\n");
+    }
 
     // a bit janky :/
     ctrlc::set_handler(move || {
@@ -120,7 +126,9 @@ pub async fn command(args: Args, _json: bool) -> Result<()> {
         .await
         .context("Failed to wait for command")?;
 
-    println!("Exited subshell, Railway variables no longer available.");
+    if !args.silent {
+        println!("Exited subshell, Railway variables no longer available.");
+    }
     Ok(())
 }