diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..febd9ad
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,46 @@
+# Use the latest 2.1 version of CircleCI pipeline process engine.
+# See: https://circleci.com/docs/configuration-reference
+version: 2.1
+
+# Define a job to be invoked later in a workflow.
+# See: https://circleci.com/docs/configuration-reference/#jobs
+jobs:
+ say-hello:
+ # Specify the execution environment. You can specify an image from Docker Hub or use one of our convenience images from CircleCI's Developer Hub.
+ # See: https://circleci.com/docs/configuration-reference/#executor-job
+ docker:
+ - image: cimg/android:2022.09
+ # Add steps to the job
+ # See: https://circleci.com/docs/configuration-reference/#steps
+ steps:
+ - checkout
+ - add_ssh_keys:
+ fingerprints:
+ - "41:e0:a7:e9:e0:b9:4e:cc:1e:1a:0d:b9:49:6c:16:17"
+ - run:
+ name: "ファイル差分あるとき画像生成する"
+ command: |
+ md5sum foo.txt> new_foo.md5
+ if [ "$(diff foo.md5 new_foo.md5)" ]
+ then
+ echo "log : diff exist"
+ else 
+ echo "log : no diff exist"
+ exit 
+ fi
+ echo "log : continue"
+ sudo apt-get install -y graphviz
+ dot -T png foo.txt -o foo.png
+ mv new_foo.md5 foo.md5
+ git config --global user.name 'foo-user'
+ git config --global user.email 'foo@gyamoto.dev'
+ git add foo.*
+ git commit -m 'update foo.*'
+ git push origin $CIRCLE_BRANCH
+
+# Orchestrate jobs using workflows
+# See: https://circleci.com/docs/configuration-reference/#workflows
+workflows:
+ say-hello-workflow:
+ jobs:
+ - say-hello
diff --git a/foo.md5 b/foo.md5
new file mode 100644
index 0000000..c3f17c6
--- /dev/null
+++ b/foo.md5
@@ -0,0 +1 @@
+3b0d260183a9f52ebb10907d355ccb37 foo.txt
diff --git a/foo.png b/foo.png
new file mode 100644
index 0000000..227708a
Binary files /dev/null and b/foo.png differ
diff --git a/foo.sh b/foo.sh
new file mode 100755
index 0000000..ee4044f
--- /dev/null
+++ b/foo.sh
@@ -0,0 +1,17 @@
+md5 foo.txt> new_foo.md5
+
+if [ "$(diff foo.md5 new_foo.md5)" ]
+then
+ echo "diff exist"
+else 
+ echo "no diff exist"
+ exit
+fi
+
+echo "continue"
+dot -T png foo.txt -o foo.png
+mv new_foo.md5 foo.md5
+
+git config --global user.name 'foo-user'
+git add foo.*
+git commit -m 'update foo.* [ci skip]'
diff --git a/foo.txt b/foo.txt
new file mode 100644
index 0000000..2a8d7bc
--- /dev/null
+++ b/foo.txt
@@ -0,0 +1,6 @@
+strict graph { 
+ a -- b
+ a -- b
+ b -- c
+ b -- a [color=blue]
+} 
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/gyamoto/AndroidExamples/compare/master...test-circle.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://github.com/gyamoto/AndroidExamples/compare/master...test-circle.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>