axelbergh

Added 3.4.1 version and parametrized gatling version on build

2

Added on Dockerfile: ``` ARG gatling_version=3.4.1 # gatling version ENV GATLING_VERSION=$gatling_version ``` to be able to override gatling version on docker build: ``` docker build --build-arg gatling_version=3.4.1 github.com/denvazh/gatling ``` See...