Update Go from 1.11 to Go 1.13 in Dockerfile
Updates Go from 1.11 to Go 1.13.x (the latest revision of 1.13) in Dockerfile template.
Part of &2 (closed)
/cc @rossfuhrman
Updates Go from 1.11 to Go 1.13.x (the latest revision of 1.13) in Dockerfile template.
Part of &2 (closed)
/cc @rossfuhrman