Improve build and scripts (#30)

* Use absolute path rather than relative path in scripts

* Remove src/bitBetter/.keys/cert.cert

* Build licenseGen in Docker
This way we don't have to install dotnet sdk on the host

* Build bitBetter in Docker
This way we don't have to install dotnet sdk on the host

* Change DIR in run.sh to point to the project root

* Replace echo in Dockerfiles by set -x and set -e

* Use same Dockerfile for api and identity images

* Update README.md

* Update CircleCI config
The Docker Executor can't mount volume.
https://support.circleci.com/hc/en-us/articles/360007324514
https://circleci.com/docs/2.0/executor-types/#using-machine

* Make scripts work with sh

* Remove the container used to build bitBetter

src/licenseGen/build.sh

@@ -1,11 +1,6 @@
-#!/bin/bash
+#!/bin/sh
 
-script_dir=`cd $(dirname $0); pwd`
-
-cd $script_dir
-
-dotnet restore
-dotnet publish
-
-docker build . -t bitbetter/licensegen # --squash
+DIR=`dirname "$0"`
+DIR=`exec 2>/dev/null;(cd -- "$DIR") && cd -- "$DIR"|| cd "$DIR"; unset PWD; /usr/bin/pwd || /bin/pwd || pwd`
 
+docker build -t bitbetter/licensegen "$DIR" # --squash