lint: pass args from lint.py to cargo run in container

ci/lint/06_script.sh

@@ -16,7 +16,7 @@ if [ -n "${LINT_CI_IS_PR}" ]; then
   fi
 fi
 
-RUST_BACKTRACE=1 cargo run --manifest-path "./test/lint/test_runner/Cargo.toml"
+RUST_BACKTRACE=1 cargo run --manifest-path "./test/lint/test_runner/Cargo.toml" -- "$@"
 
 if [ "${LINT_CI_SANITY_CHECK_COMMIT_SIG}" = "1" ] ; then
     # Sanity check only the last few commits to get notified of missing sigs,

ci/lint/container-entrypoint.sh

@@ -12,8 +12,4 @@ git config --global --add safe.directory /bitcoin
 
 export PATH="/python_build/bin:${PATH}"
 
-if [ -z "$1" ]; then
-  bash -ic "./ci/lint/06_script.sh"
-else
-  exec "$@"
-fi
+./ci/lint/06_script.sh "$@"

test/lint/README.md

@@ -10,6 +10,13 @@ the _lint.py_ helper script which runs checks inside the CI container:
 ./ci/lint.py
 ```
 
+Extra arguments are passed to `cargo run -- ...` in the container so you can do:
+
+```sh
+./ci/lint.py --help
+./ci/lint.py --lint=py_lint
+```
+
 test runner
 ===========