BAEL-5496: passing env variables in dockerfile (#12355)

* BAEL-5496: passing env variables in dockerfile

* removed echo

docker-modules/docker-environment-variables/Dockerfile

@@ -0,0 +1,10 @@
+FROM alpine:latest
+
+ARG name
+ENV env_name $name
+
+COPY greetings.sh .
+
+RUN chmod +x /greetings.sh
+
+CMD ["/greetings.sh"]

docker-modules/docker-environment-variables/greetings.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo Hello $env_name