Add build-static.sh, and update local development instruction

Signed-off-by: Yucong Sun <sunyucong@gmail.com>

README.md

@@ -111,6 +111,24 @@ For additional help / discussion, please use our [discussions](https://github.co
 
 ## Development
 
+### Docker
+
+For build & test directly in docker
+
+```
+$ ./build.sh
+```
+
+For build in docker then test directly on host
+
+```
+$ ./build-static.sh
+$ ./build-static/src/bpftrace
+$ ./build-static/testing/bpftrace_test
+```
+
+### Vagrant
+
 For development and testing a [Vagrantfile](Vagrantfile) is available.
 
 Make sure you have the `vbguest` plugin installed, it is required to correctly

build-static.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -eu
+export BASE=ubuntu-glibc
+export LLVM_VERSION=12
+export RUN_TESTS=0
+./build-docker-image.sh
+docker run --network host --rm -it -u $(id -u):$(id -g) -v $(pwd):$(pwd) -e STATIC_LINKING=ON -e STATIC_LIBC=OFF -e ALLOW_UNSAFE_PROBE=OFF -e VENDOR_GTEST=ON -e RUN_TESTS=${RUN_TESTS} -e EMBED_USE_LLVM=ON bpftrace-builder-${BASE} "$(pwd)/build-static" Release "$@"