diff --git a/.gitignore b/.gitignore
index 620f8f6..78e23f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,5 @@ Cargo.lock
 # Added by cargo
 
 /target
+/mutants.out/
+/mutants.out.old/
diff --git a/justfile b/justfile
index bf5358e..83fcea9 100644
--- a/justfile
+++ b/justfile
@@ -1,3 +1,15 @@
+build:
+  #!/usr/bin/env bash
+  set -e
+  cargo fmt
+  cargo fmt --check
+  cargo hack clippy
+  cargo hack build
+  cargo hack test
+  cargo doc
+  # cargo test --example get
+  cargo mutants --jobs 4
+
 self-test:
   just test $PWD forgejo-todo-checker