Set pwd for precommit.sh script to support running it in any directory (#2535)

Co-authored-by: Cijo Thomas <cijo.thomas@gmail.com>
Co-authored-by: Lalit Kumar Bhasin <lalit_fin@yahoo.com>

Author: 3 people

CONTRIBUTING.md

@@ -79,8 +79,7 @@ Open a pull request against the main
 repo.
 
 > **Note**
-> It is recommended to run [pre-commit script](scripts/precommit.sh) from the root of
-the repo to catch any issues locally.
+> It is recommended to run [pre-commit script](scripts/precommit.sh) to catch any issues locally.
 
 ### How to Receive Comments
 

scripts/precommit.sh

@@ -1 +1,7 @@
-cargo update && cargo fmt --all && ./scripts/lint.sh && ./scripts/test.sh
+REPO_ROOT=$(dirname $( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd ))
+
+pushd "${REPO_ROOT}" > /dev/null
+
+cargo update && cargo fmt --all && ./scripts/lint.sh && ./scripts/test.sh
+
+popd > /dev/null