add build and run instructions to README

Author: js-jslog

README.md

@@ -1,2 +1,12 @@
 # development-env
 The files to build a docker container with the applications I use for development
+
+# Build
+```
+docker build --build-arg http_proxy --build-arg https_proxy --build-arg HTTP_PROXY --build-arg HTTPS_PROXY  .
+```
+
+# Run
+```
+docker run -ti -e http_proxy -e https_proxy -e HTTP_PROXY -e HTTPS_PROXY --rm -v $(pwd):/home/developer/workspace
+```