diff --git a/Dockerfile b/Dockerfile
index d544579..46e5c71 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,9 +14,6 @@ RUN echo "*" >committedfile
 RUN git add committedfile
 RUN git commit -m 'Add new file'
 
-RUN git init
-RUN git add .
-
 WORKDIR /go/src/github.com/uetchy/gst
 
 # install deps
diff --git a/README.md b/README.md
index 7726c73..b125473 100644
--- a/README.md
+++ b/README.md
@@ -154,3 +154,11 @@ go get github.com/uetchy/gst
 ```
 
 # Development
+
+## Test
+
+Docker is required to run tests.
+
+```bash
+make test
+```