reinstall: Cleaner formatting of podman bootc install message

This makes it easier to copy/paste (and read) the `podman ... bootc
install ...` command from the CLI output.

Signed-off-by: ckyrouac <ckyrouac@redhat.com>

Author: ckyrouac

system-reinstall-bootc/src/main.rs

@@ -44,7 +44,9 @@ fn run() -> Result<()> {
         podman::reinstall_command(&config.bootc_image, ssh_key_file_path);
 
     println!();
-    println!("Going to run command {:?}", reinstall_podman_command);
+    println!("Going to run command:");
+    println!();
+    println!("{}", podman::print_command(&reinstall_podman_command));
 
     prompt::temporary_developer_protection_prompt()?;
 

system-reinstall-bootc/src/podman.rs

@@ -6,6 +6,16 @@ use bootc_utils::CommandRunExt;
 use std::process::Command;
 use which::which;
 
+pub(crate) fn print_command(command: &Command) -> String {
+    let program = command.get_program().to_string_lossy();
+    let args = command
+        .get_args()
+        .map(|arg| arg.to_string_lossy())
+        .collect::<Vec<_>>()
+        .join(" ");
+    format!("{} {}", program, args)
+}
+
 pub(crate) fn reinstall_command(image: &str, ssh_key_file: &str) -> Command {
     let mut podman_command_and_args = [
         // We use podman to run the bootc container. This might change in the future to remove the