Merge pull request #400 from michael-k/patch-1

Update to Alpine 3.7 for Postgres 10

10/alpine/Dockerfile

@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM alpine:3.6
+FROM alpine:3.7
 
 # alpine includes "postgres" user/group in base install
 #   /etc/passwd:22:postgres:x:70:70::/var/lib/postgresql:/bin/sh

update.sh

@@ -21,7 +21,7 @@ declare -A alpineVersion=(
 	[9.4]='3.5'
 	[9.5]='3.5'
 	[9.6]='3.5'
-	[10]='3.6'
+	[10]='3.7'
 )
 
 packagesBase='http://apt.postgresql.org/pub/repos/apt/dists/'