diff --git a/action.yml b/action.yml
index a76239a..e0c2126 100644
--- a/action.yml
+++ b/action.yml
@@ -23,11 +23,16 @@ runs:
   using: 'composite'
   steps:
     - run: |
-        bash $GITHUB_ACTION_PATH/entrypoint.sh
+        npm install -g remark-cli@10.0.1
+        npm install -g $INPUT_PLUGINS
+
+        for path in $INPUT_FILES
+        do
+          npx remark "$path" --rc-path="${INPUT_RC_PATH}" ${INPUT_ARGS}
+        done
       id: remark
       shell: bash
       env:
-        GITHUB_ACTION_PATH: ${{ github.action_path }}
         # INPUT_<VARIABLE_NAME> is not available in Composite run steps
         # https://github.community/t/input-variable-name-is-not-available-in-composite-run-steps/127611
         INPUT_RC_PATH: ${{ inputs.rc_path }}
diff --git a/entrypoint.sh b/entrypoint.sh
deleted file mode 100755
index aaf5d15..0000000
--- a/entrypoint.sh
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-npm install -g remark-cli@10.0.1
-
-# shellcheck disable=SC2086
-npm install -g $INPUT_PLUGINS
-
-for path in ${INPUT_FILES}
-do
-  # shellcheck disable=SC2086
-  npx remark "$path" --rc-path="${INPUT_RC_PATH}" ${INPUT_ARGS}
-done