Primes v1.2.3

This release adds the ability to use Go's gccgo compiler if it's available and write all go commands executed to a local hidden .golog file. Also:

• install gccgo instead of gccgo-go package in Ubunto docker image to fix gccgo-go/golang-go issue where gccgo compiler wasn't installed
• add a script for Go apps that uses the gccgo compiler if it's available, or the go compiler if not
• add prime bounce command to stop, rebuild and restart docker containers, either to reset the images or to install image changes
• modify prime container shell to use default shell for distro if the specified shell is only available on the other project distros