Update Dockerfile base image to Ubuntu 16.04, cc #2008
diff --git a/Dockerfile b/Dockerfile
index 3b121e7..07d3514 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@
# Use Ubuntu Trusty Tahr as base image as we're using on Travis CI
# I also tested with Ubuntu 16.04, should be good with it!
-FROM ubuntu:14.04
+FROM ubuntu:16.04
LABEL maintainer="Peter Dave Hello <hsu@peterdavehello.org>"
LABEL name="nvm-dev-env"
LABEL version="latest"
@@ -20,7 +20,7 @@
ENV DEBIAN_FRONTEND noninteractive
# ShellCheck version
-ENV SHELLCHECK_VERSION=0.6.0
+ENV SHELLCHECK_VERSION=0.7.0
# Pick a Ubuntu apt mirror site for better speed
# ref: https://launchpad.net/ubuntu/+archivemirrors