Add image ls and image rm commands

src/image.rs

@@ -0,0 +1,34 @@
+use std::fs;
+
+use crate::registry::{registry_base_dir, validate_image_name};
+use anyhow::Context;
+use clap::Subcommand;
+
+#[derive(Subcommand, Debug)]
+pub enum ImageCmd {
+    Ls,
+    Rm { image: String },
+}
+
+pub fn run(cmd: ImageCmd) -> anyhow::Result<()> {
+    match cmd {
+        ImageCmd::Ls => ls(),
+        ImageCmd::Rm { image } => rm(&image),
+    }
+}
+
+fn rm(image: &str) -> Result<(), anyhow::Error> {
+    validate_image_name(image)?;
+    let image_dir = registry_base_dir()?.join(image);
+    fs::remove_dir_all(image_dir).context("Failed to remove image dir")?;
+    Ok(())
+}
+
+fn ls() -> anyhow::Result<()> {
+    let dir = fs::read_dir(registry_base_dir()?)?;
+    for entry in dir {
+        let entry = entry?.file_name();
+        println!("  {}", entry.to_string_lossy());
+    }
+    Ok(())
+}