diff --git a/.gitignore b/.gitignore
index 29be559..7e91d2e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 defaults/
 myip
 myip_*
+go-myip
diff --git a/README.md b/README.md
index da2deab..aabc119 100644
--- a/README.md
+++ b/README.md
@@ -17,12 +17,14 @@ Choose your OS here: https://github.com/kitsuyui/go-myip/releases
 # Build
 
 ```console
+$ go get github.com/jteeuwen/go-bindata/...
 $ go generate
+$ go get -d ./...
 $ go build
 ```
 
 ## with Docker
 
 ```console
-$ docker run --rm -v "$(pwd)":/myip -w /myip tcnksm/gox sh -c "go get -d ./... && gox -ldflags '-w -s'"
+$ docker run --rm -v "$(pwd)":/myip -w /myip tcnksm/gox sh -c "./build.sh"
 ```
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..11e6a34
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+go get github.com/jteeuwen/go-bindata/...
+go generate
+go get -d ./...
+gox -ldflags '-w -s'