set nullglob when looking for PORT files. closes #1678
set nullglob when looking for PORT files. closes #1678

econya/dokku,codeconfab/dokku,amaltson/dokku,fruitl00p/dokku,claytonbrown/dokku,Evlos/dokku,elia/dokku,elia/dokku,dokku/dokku,amaltson/dokku,claytonbrown/dokku,sseemayer/dokku,pmvieira/dokku,Evlos/dokku,claytonbrown/dokku,crisward/dokku,johnfraney/dokku,alessio/dokku,Evlos/dokku,fruitl00p/dokku,alexquick/dokku,alessio/dokku,progrium/dokku,amaltson/dokku,elia/dokku,elia/dokku,jimjag/dokku,Evlos/dokku,expa/dokku,amaltson/dokku,sseemayer/dokku,alessio/dokku,jimjag/dokku,crisward/dokku,fruitl00p/dokku,johnfraney/dokku,elia/dokku,alexquick/dokku,fruitl00p/dokku,pmvieira/dokku,pmvieira/dokku,claytonbrown/dokku,econya/dokku,Evlos/dokku,pmvieira/dokku,Evlos/dokku,codeconfab/dokku,fruitl00p/dokku,dokku/dokku,dokku/dokku,dokku/dokku,fruitl00p/dokku,alexquick/dokku,Evlos/dokku,dokku/dokku,dokku/dokku,expa/dokku,alexquick/dokku,sseemayer/dokku,progrium/dokku,alessio/dokku,alessio/dokku,codeconfab/dokku,amaltson/dokku,claytonbrown/dokku,alessio/dokku,amaltson/dokku,johnfraney/dokku,jimjag/dokku,alexquick/dokku,johnfraney/dokku,crisward/dokku,codeconfab/dokku,codeconfab/dokku,expa/dokku,alexquick/dokku,crisward/dokku,codeconfab/dokku,progrium/dokku,progrium/dokku,jimjag/dokku,elia/dokku,claytonbrown/dokku,pmvieira/dokku,progrium/dokku,johnfraney/dokku,fruitl00p/dokku,johnfraney/dokku,progrium/dokku,econya/dokku,expa/dokku,jimjag/dokku,codeconfab/dokku,pmvieira/dokku,pmvieira/dokku,econya/dokku,sseemayer/dokku,crisward/dokku,pmvieira/dokku,jimjag/dokku,fruitl00p/dokku,elia/dokku,progrium/dokku,sseemayer/dokku,alessio/dokku,jimjag/dokku,econya/dokku,jimjag/dokku,crisward/dokku,sseemayer/dokku,progrium/dokku,alessio/dokku,crisward/dokku,econya/dokku,elia/dokku,dokku/dokku,codeconfab/dokku,expa/dokku,expa/dokku,expa/dokku,sseemayer/dokku,alexquick/dokku,amaltson/dokku,econya/dokku,expa/dokku,claytonbrown/dokku,dokku/dokku,johnfraney/dokku,Evlos/dokku,econya/dokku,crisward/dokku,johnfraney/dokku,claytonbrown/dokku,amaltson/dokku,alexquick/dokku,sseemayer/dokku