docs: mention `just build pack`

Amolith created

Change summary

README.md | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

Detailed changes

README.md 🔗 

@@ -28,7 +28,8 @@ CGO_ENABLED=0 go build -o lunatask-mcp-server .
 ```
 
 If you have [just], build with `just build` (supports `GOOS` and `GOARCH`). If
-you also have [upx], compress the resulting binary with `just upx`.
+you also have [upx], compress the resulting binary with `just upx`. You can run
+one after the other with `just build pack`.
 
 [just]: https://github.com/casey/just
 [upx]: https://github.com/upx/upx