Allow explicit APT configuration for builds

1 files changed, 9 insertions, 4 deletions

diff --git a/src/cli.rs b/src/cli.rs
index ffa9bba..2e204fa 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -30,6 +30,9 @@ pub enum Command {
         spec: PathBuf,
         #[arg(long)]
         workspace: PathBuf,
+        /// Project-owned APT configuration. Defaults to apt.conf beside the specification.
+        #[arg(long)]
+        apt_config: Option<PathBuf>,
         #[arg(long)]
         output: PathBuf,
     },
@@ -63,13 +66,15 @@ pub fn run(cli: Cli) -> Result<()> {
         Command::Build {
             spec,
             workspace,
+            apt_config,
             output,
         } => {
             let plan = BuildPlan::compile(ImageSpec::load(&spec)?)?;
-            let apt_config = spec
-                .parent()
-                .unwrap_or_else(|| std::path::Path::new("."))
-                .join("apt.conf");
+            let apt_config = apt_config.unwrap_or_else(|| {
+                spec.parent()
+                    .unwrap_or_else(|| std::path::Path::new("."))
+                    .join("apt.conf")
+            });
             let installer = HasherInstaller::new(HasherProcessRunner);
             let initramfs = MakeInitrdBuilder::new(InitramfsProcessRunner);
             let mut executor = BuildExecutor::new(installer, initramfs);