fix: Set $PATH so defaults are last

This is generally considered good practice, so your newly-installed Go
bins can override similarly-named bins that come with the OS.

CHANGELOG.md

@@ -22,6 +22,7 @@ This file is used to list changes made in each version of golang.
 - Clean up unnecessary env vars from source build
 - Build from source per [official Go docs](https://golang.org/doc/install/source)
 - Use native resources instead of shell commands when building from source
+- Set `$PATH` in `golang.sh` so that the existing values are last, per general practice
 
 ## 3.0.0
 

templates/default/golang.sh.erb

@@ -1,3 +1,3 @@
-export PATH=$PATH:<%= node['golang']['install_dir'] %>/go/bin:<%= node['golang']['gobin'] %>
+export PATH="<%= node['golang']['install_dir'] %>/go/bin:<%= node['golang']['gobin'] %>:$PATH"
 export GOPATH=<%= node['golang']['gopath'] %>
 export GOBIN=<%= node['golang']['gobin'] %>