Add containerization and build optimization

- Add Containerfile with multi-stage Alpine build
- Add Justfile with build and push recipes for ghcr.io
- Configure Cargo.toml for size optimization (strip, lto, panic=abort)
- Add pre-commit hook for cargo fmt and test

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 7ae1fe2..db83c49 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -278,7 +278,7 @@ dependencies = [
 
 [[package]]
 name = "oar-p2p"
-version = "0.1.0"
+version = "0.0.0"
 dependencies = [
  "clap",
  "color-eyre",