Fixed podman call dead lock

When calling the flake and stdout/stderr gets redirected into
a pipe like `flake | grep ... | cut ...` the pilot binary runs
in a dead lock because there is no reader/writer to feed the
pipe from the child process (podman) executed via the pilot.
This commit fixes it by making sure all data from the child
gets read first and then passed along to stdout/stderr of the
caller.

podman-pilot/src/podman.rs

@@ -33,6 +33,7 @@ use flakes::command::{CommandError, CommandExtTrait};
 use flakes::container::Container;
 use flakes::config::get_podman_ids_dir;
 
+use std::io;
 use std::path::Path;
 use std::process::{Command, Output, Stdio};
 use std::env;
@@ -478,7 +479,8 @@ pub fn call_instance(
     let RuntimeSection { resume, .. } = config().runtime();
 
     let mut call = user.run("podman");
-    if action == "rm_force" {
+    if action == "rm" || action == "rm_force" {
+        call.stdout(Stdio::null());
         call.arg("rm").arg("--force");
     } else {
         call.arg(action);
@@ -508,19 +510,16 @@ pub fn call_instance(
     if Lookup::is_debug() {
         debug!("{:?}", call.get_args());
     }
-    if action == "rm" || action == "rm_force" {
-        match call.perform() {
-            Ok(output) => {
-                output
-            }
-            Err(_) => {
-                let _ = Container::podman_setup_permissions();
-                call.perform()?
-            }
-        };
-    } else {
-        call.status()?;
-    }
+    match call.output() {
+        Ok(output) => {
+            let _ = io::stdout().write_all(&output.stdout);
+            let _ = io::stderr().write_all(&output.stderr);
+        },
+        Err(_) => {
+            let _ = Container::podman_setup_permissions();
+            call.output()?;
+        }
+    };
     Ok(())
 }