diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ad625be..f5fc008 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,6 +1,6 @@
 name: CI
 
-on: [push]
+on: [pull_request]
 
 jobs:
   build:
@@ -10,7 +10,6 @@ jobs:
       image: utyosu/build-rails:latest
 
     steps:
-    - run: |
-        BRANCH_NAME=`echo "${GITHUB_REF}" | sed "s/^\(refs\/heads\/\|refs\/remotes\/\)//"`
-        echo ${BRANCH_NAME}
-        /app/run.sh https://github.com/${GITHUB_REPOSITORY}.git ${BRANCH_NAME} tools/cloud_build/test.sh
+    - uses: actions/checkout@master
+    - name: run test
+      run: . tools/cloud_build/test.sh
diff --git a/tools/cloud_build/Dockerfile b/tools/cloud_build/Dockerfile
index 8391984..f5c6b4b 100644
--- a/tools/cloud_build/Dockerfile
+++ b/tools/cloud_build/Dockerfile
@@ -5,9 +5,10 @@ FROM ubuntu:16.04
 
 SHELL ["/bin/bash", "-c"]
 
-ENV DEBIAN_FRONTEND="noninteractive"
 ENV RUBY_VERSION="2.5.1"
 ENV BUNDLER_VERSION="2.1.4"
+ENV DEBIAN_FRONTEND="noninteractive"
+ENV PATH=/root/.rbenv/bin:/root/.rbenv/shims:$PATH
 
 WORKDIR /app
 
@@ -39,5 +40,3 @@ RUN set -x \
   && /root/.rbenv/shims/bundle config set without development \
   && /root/.rbenv/shims/bundle install \
   && rm Gemfile Gemfile.lock
-
-COPY /tools/cloud_build/run.sh .
diff --git a/tools/cloud_build/run.sh b/tools/cloud_build/run.sh
deleted file mode 100644
index 916b654..0000000
--- a/tools/cloud_build/run.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-
-# Rubyにパスを通す
-export PATH="/root/.rbenv/bin:/root/.rbenv/shims:$PATH"
-
-# Dockerfileがマルチレイヤのとき、MySQLを起動する前に以下コマンドの実行が必要
-find /var/lib/mysql -type f -exec touch {} \;
-
-REPOSITORY=${1}
-BRANCH=${2}
-SCRIPT_PATH=${3}
-
-mkdir repository
-git clone -b ${BRANCH} ${REPOSITORY} repository
-cd repository
-
-. ${SCRIPT_PATH}