Bump rakudo-star to latest version

[hoelzro]

No description provided.

[tianon]

Diff:

warning: insecure protocol git:// detected: git://github.com/perl6/docker
diff --git a/_bashbrew-list b/_bashbrew-list
index e675f54..2f6fbad 100644
--- a/_bashbrew-list
+++ b/_bashbrew-list
@@ -1,2 +1,2 @@
-rakudo-star:2017.07
+rakudo-star:2017.10
 rakudo-star:latest
diff --git a/rakudo-star_latest/Dockerfile b/rakudo-star_latest/Dockerfile
index fba6524..9b29a5c 100644
--- a/rakudo-star_latest/Dockerfile
+++ b/rakudo-star_latest/Dockerfile
@@ -1,9 +1,10 @@
-FROM buildpack-deps:jessie-scm
+FROM buildpack-deps:stretch-scm
 MAINTAINER Rob Hoelz
 
 RUN groupadd -r perl6 && useradd -r -g perl6 perl6
 
-ENV rakudo_version=2017.07
+ARG rakudo_version=2017.10
+ENV rakudo_version=${rakudo_version}
 
 RUN buildDeps=' \
         gcc \

[tianon]

LGTM

Build test of #3689; 6a0f01e; amd64 (rakudo-star):

$ bashbrew build rakudo-star:2017.10
warning: insecure protocol git:// detected: git://github.com/perl6/docker
Building bashbrew/cache:0426c33a8af5206c7656ad2285e29f9490972161b60c8df52327830e6d6f74e4 (rakudo-star:2017.10)
Tagging rakudo-star:2017.10
Tagging rakudo-star:latest

$ test/run.sh rakudo-star:2017.10
testing rakudo-star:2017.10
	'utc' [1/4]...passed
	'cve-2014--shellshock' [2/4]...passed
	'no-hard-coded-passwords' [3/4]...passed
	'override-cmd' [4/4]...passed