Fix Dockerfile to support Composer.
Fix Dockerfile to support Composer.

ashbike/kanboard,creador30/kanboard,filhocf/kanboard,goofy-bz/kanboard,hussam789/kanboard,jtourt/kanboard,mcorteel/kanboard,kclabrador/kan-test,crwilliams/kanboard,EpocDotFr/kanboard,patoi/kanboard,dromek/kanboard,mozillabrasil/kanboard,mbrzuchalski/kanboard,666/kanboard-redesign,kasunf/KanboardBOI,jvizueta/kanboard,ChMat/kanboard,Busfreak/kanboard,mozillabrasil/kanboard,thylo/kanboard,vjscjp09/kanboard-1,mcfog/kanboard,renothing/kanboard,wepika/kanboard,wepika/kanboard,hussam789/kanboard,corretgecom/kanboard,jmptrader/kanboard,mcfog/kanboard,erwang/kanboard,sanbiv/kanboard,Typz/kanboard,onedal88/kanboard,libin/kanboard,EpocDotFr/kanboard,Shaxine/kanboard,SamuelMoraesF/kanboard,julesverhaeren/kanboard,mfoucrier/kanboard,kclabrador/kan-test,jtourt/kanboard,kanbantestnew/kanban,kanboard/kanboard,wepika/kanboard,Busfreak/kanboard,cdgeelen/kanboard,mbrzuchalski/kanboard,mcorteel/kanboard,filhocf/kanboard,marienfressinaud/kanboard,xavividal/kanboard,jtourt/kanboard,goofy-bz/kanboard,BlueTeck/kanboard,marienfressinaud/kanboard,JeroenKnoops/kanboard,vjscjp/kanboard,cHolzberger/kanboard,BlueTeck/kanboard,jmptrader/kanboard,onedal88/kanboard,cHolzberger/kanboard,cdgeelen/kanboard,julesverhaeren/kanboard,kanboard/kanboard,wepika/kanboard,stinnux/kanboard,patoi/kanboard,alu0100502114/kanboard,BlueTeck/kanboard,Nerdingher/kanboard,arcanneero/kanboard,fabiano-pereira/kanboard,Busfreak/kanboard,mfoucrier/kanboard,Nerdingher/kanboard,leangjia/kanboard,SamuelMoraesF/kanboard,ashbike/kanboard,oliviermaridat/kanboard,cHolzberger/kanboard,djpadz/kanboard,alu0100502114/kanboard,skobeo/kanboard,djpadz/kanboard,vjscjp09/kanboard-1,fguillot/kanboard,ZegalPL/kanboard,mfoucrier/kanboard,mfoucrier/kanboard,fguillot/kanboard,markmarco16/kanboard,Nerdingher/kanboard,jclafuente/kanboard,lianguan/kanboard,666/kanboard-redesign,666/kanboard-redesign,eSkiSo/kanboard,ZegalPL/kanboard,lianguan/kanboard,cHolzberger/kanboard,fguillot/kanboard,jclafuente/kanboard,renothing/kanboard,ashbike/kanboard,skobeo/kanboard,manishlad/kanboard,fabiano-pereira/kanboard,wiebkem/kanboard,thylo/kanboard,xavividal/kanboard,crwilliams/kanboard,kasunf/KanboardBOI,oliviermaridat/kanboard,ZegalPL/kanboard,kanboard/kanboard,Typz/kanboard,cdgeelen/kanboard,thylo/kanboard,vaikan/kanboard,corretgecom/kanboard,creador30/kanboard,wtmmac/kanboard,oliviermaridat/kanboard,onedal88/kanboard,xavividal/kanboard,cogumm/kanboard,erwang/kanboard,julesverhaeren/kanboard,jmptrader/kanboard,patoi/kanboard,sanbiv/kanboard,ashbike/kanboard,wtmmac/kanboard,mozillabrasil/kanboard,vjscjp/kanboard,arcanneero/kanboard,Typz/kanboard,ZegalPL/kanboard,stinnux/kanboard,stinnux/kanboard,manishlad/kanboard,mozillabrasil/kanboard,cranca/kanboard,lianguan/kanboard,Shaxine/kanboard,cogumm/kanboard,crwilliams/kanboard,renothing/kanboard,leangjia/kanboard,dromek/kanboard,eSkiSo/kanboard,jclafuente/kanboard,cranca/kanboard,vjscjp09/kanboard-1,eSkiSo/kanboard,markmarco16/kanboard,ChMat/kanboard,jvizueta/kanboard,eSkiSo/kanboard,jmptrader/kanboard,vaikan/kanboard,filhocf/kanboard,djpadz/kanboard,mcorteel/kanboard,Typz/kanboard,Shaxine/kanboard,onedal88/kanboard,kanbantestnew/kanban,libin/kanboard,kasunf/KanboardBOI,vaikan/kanboard,dromek/kanboard,666/kanboard-redesign,wiebkem/kanboard,crwilliams/kanboard,JeroenKnoops/kanboard