Specify Java buildpack and remove random customization
Specify Java buildpack and remove random customization

mix-it/mixit,mixitconf/mixit,sdeleuze/mixit,mix-it/mixit,mix-it/mixit,sdeleuze/mixit,mixitconf/mixit,mix-it/mixit,sdeleuze/mixit,mixitconf/mixit,mixitconf/mixit,sdeleuze/mixit,mix-it/mixit