quark: Implement build subcommand

Signed-off-by: Julian Labatut <[email protected]>

README.md

@@ -1,3 +1,23 @@
-# Lumper
+# Quark
 
 <img src="https://img.shields.io/github/workflow/status/virt-do/quark/quark%20build%20and%20unit%20tests?style=for-the-badge" />
+
+## Build a quardle
+
+Building a `quardle` with the container image bundled into the initramfs image :
+
+```bash
+quark build  --image <container_image_url> --offline --quardle <quardle_name>
+```
+
+Building a `quardle` with the container image to be pulled from within the guest:
+
+```bash
+quark build  --image <container_image_url> --quardle <quardle_name>
+```
+
+## Run a quardle
+
+```bash
+quark run --quardle <quardle> --output <output_file>
+```

src/cli/build.rs

@@ -0,0 +1,30 @@
+use clap::Args;
+
+use super::{Handler, Result};
+
+/// Arguments for `BuildCommand`
+///
+/// Usage :
+/// `quark build --image <container_image_url> [--offline] --quardle <quardle_name>`
+#[derive(Debug, Args)]
+pub struct BuildCommand {
+    /// The name of the generated quardle, with the suffix `.qrk`
+    #[clap(short, long)]
+    quardle: String,
+
+    /// The container image url to use
+    #[clap(short, long)]
+    image: String,
+
+    /// Indicates wether or not the container image is bundled into the initramfs image
+    #[clap(short, long)]
+    offline: bool
+}
+
+/// Method that will be called when the command is executed.
+impl Handler for BuildCommand {
+    fn handler(&self) -> Result<()> {
+        // TODO
+        Ok(())
+    }
+}

src/cli/mod.rs

@@ -1,6 +1,8 @@
 mod run;
+mod build;
 
 use crate::cli::run::RunCommand;
+use crate::cli::build::BuildCommand;
 use clap::{Parser, Subcommand};
 
 #[derive(Debug)]
@@ -24,6 +26,7 @@ impl Cli {
     /// Return the command used in the cli.
     pub fn command(self) -> Box<dyn Handler> {
         match self.command {
+            Command::Build(cmd) => Box::new(cmd),
             Command::Run(cmd) => Box::new(cmd),
         }
     }
@@ -41,6 +44,8 @@ impl Cli {
 /// List(ListCommand)
 #[derive(Subcommand, Debug)]
 pub enum Command {
+    /// Build a quardle
+    Build(BuildCommand),
     /// Run a quardle
     Run(RunCommand),
 }