Upgrade the dev image to apline 3.8 & the latest sonar-scala snapshot.

Author: mwz

dev/Dockerfile

@@ -2,7 +2,7 @@
 # which can be mounted as a volume into a SonarQube container.
 # This image is intended to be used for local development purposes.
 
-FROM alpine:3.7
+FROM alpine:3.8
 
 ARG SONAR_SCALA_VERSION
 

dev/build.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 set -eu
 
-export SONAR_SCALA_VERSION=7.0.0-SNAPSHOT
+export SONAR_SCALA_VERSION=7.1.0-SNAPSHOT
 cp ~/.ivy2/local/com.github.mwz/sonar-scala_2.12/${SONAR_SCALA_VERSION}/jars/sonar-scala_2.12-assembly.jar .
 docker build -t mwizner/sonarqube-scala-plugins:dev --build-arg SONAR_SCALA_VERSION=${SONAR_SCALA_VERSION} .