Upgrade to Alpine 3.7

DarthGandalf · DarthGandalf · commit 7f4f14214b67 · 2018-01-07T16:16:19.000Z
This enables support for docker on Arm
diff --git a/slim/Dockerfile b/slim/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.5
+FROM alpine:3.7
 
 ENV GPG_KEY D5823CACB477191CAC0075555AE420CC0209989E
 
