A more reliable way to detect Ubuntu
A more reliable way to detect Ubuntu

lsb_release command is included in lsb-release package. Sometimes this is
not installed; ex: Docker official Ubuntu image.
/etc/os-release is included in base-files package,
so this is more reliable than lsb_release.

crashlytics/vagrant,signed8bit/vagrant,krig/vagrant,benh57/vagrant,kamazee/vagrant,signed8bit/vagrant,kamazee/vagrant,bdwyertech/vagrant,bdwyertech/vagrant,PatrickLang/vagrant,tomfanning/vagrant,bshurts/vagrant,carlosefr/vagrant,gitebra/vagrant,bryson/vagrant,signed8bit/vagrant,chrisroberts/vagrant,krig/vagrant,mwrock/vagrant,lonniev/vagrant,benizi/vagrant,crashlytics/vagrant,carlosefr/vagrant,bryson/vagrant,PatrickLang/vagrant,bdwyertech/vagrant,kamazee/vagrant,sni/vagrant,gitebra/vagrant,lukebakken/vagrant,lonniev/vagrant,bdwyertech/vagrant,chrisroberts/vagrant,sni/vagrant,mitchellh/vagrant,bshurts/vagrant,marxarelli/vagrant,lonniev/vagrant,signed8bit/vagrant,taliesins/vagrant,tomfanning/vagrant,marxarelli/vagrant,crashlytics/vagrant,krig/vagrant,bshurts/vagrant,PatrickLang/vagrant,jtopper/vagrant,tomfanning/vagrant,taliesins/vagrant,marxarelli/vagrant,mitchellh/vagrant,lonniev/vagrant,PatrickLang/vagrant,jtopper/vagrant,carlosefr/vagrant,bshurts/vagrant,benizi/vagrant,justincampbell/vagrant,carlosefr/vagrant,mwrock/vagrant,taliesins/vagrant,chrisroberts/vagrant,benh57/vagrant,sni/vagrant,lukebakken/vagrant,chrisroberts/vagrant,bryson/vagrant,jtopper/vagrant,jtopper/vagrant,lukebakken/vagrant,justincampbell/vagrant,gitebra/vagrant,krig/vagrant,benh57/vagrant,kamazee/vagrant,benh57/vagrant,mwrock/vagrant,lukebakken/vagrant,marxarelli/vagrant,mitchellh/vagrant,justincampbell/vagrant,benizi/vagrant,mwrock/vagrant,taliesins/vagrant,tomfanning/vagrant,mitchellh/vagrant,justincampbell/vagrant,gitebra/vagrant,benizi/vagrant,sni/vagrant,bryson/vagrant,crashlytics/vagrant