Update

Author: wangkuiyi

dev.md

@@ -11,11 +11,20 @@
 1. To suspend the VM, run `vagrant halt`.  You can run `vagrant up` later to resume it.
 1. To completely destroy the VM and re-provision it, run `vagrant destroy` and `vagrant up`.
 
-We have provided an install shell script for you to get an easy initialization.  You can run it with:
+We provided a shell script to start a VM running the SQLFlow service.
+
+```bash
+./play.sh
+```
+
+If you have a slow Internet connection to Vagrant Cloud, you might want to
+download the Ubuntu VirtualBox image manually from some mirror sites into
+`~/.cache/sqlflow/` before running the above script.
+
 ```bash
-./install.sh [inchina]
+wget -c -nv --show-progress -O downloads/ubuntu-bionic64.box \
+"https://mirrors.ustc.edu.cn/ubuntu-cloud-images/bionic/current/bionic-server-cloudimg-amd64-vagrant.box"
 ```
-It will guide you to setup the vagrant environment.  Especially, for developers in China, you may add the `inchina` param to download the ubuntu box for vagrant beforehand.  After the initialization, you will have a virtual machine named `playground_default...` in VirtualBox which is already provisioned.  You may follow the direction of the output to get things done.
 
 ### For Releaser
 

install.bash

@@ -15,10 +15,6 @@
 
 set -e
 
-if [[ "$1" == "inchina" ]]; then
-  export WE_ARE_IN_CHINA=true
-fi
-
 echo
 echo "Welcome to SQLFlow playground!"
 echo
@@ -43,16 +39,10 @@ if [[ -z "$(vagrant plugin list | grep -o 'vagrant-disksize')" ]]; then
     vagrant plugin install vagrant-disksize
 fi
 
-if [[ "$WE_ARE_IN_CHINA" ]]; then
-  if [[ -z "$(vagrant box list | grep -o ubuntu/bionic64)" ]]; then
-    echo "Download ubuntu box beforehand..."
-    mkdir -p downloads
-    # try with https://mirrors.ustc.edu.cn/ if below not work
-    wget -c -nv --show-progress -O downloads/ubuntu-bionic64.box "https://mirrors.ustc.edu.cn/ubuntu-cloud-images/bionic/current/bionic-server-cloudimg-amd64-vagrant.box"
-    vagrant box add ubuntu/bionic64 downloads/ubuntu-bionic64.box
-  fi
+CACHED_BOX="$HOME/.cache/sqlflow/ubuntu-bionic64.box"
+if [[ -f $CACHED_BOX ]]; then
+    vagrant box add ubuntu/bionic64 $CACHED_BOX
 fi
 
 echo "Start and provision the playgound now..."
 vagrant up
-