Added missing Docker targets.
Added missing Docker targets.

Also added line to create ebin dir if it doesn't exist. Without this,
Docker-based builds of LFE were failing during make.

yurrriq/lfe,arpunk/lfe,oubiwann/lfe,oubiwann/lfe,arpunk/lfe,jjl/lfe,bsmr-erlang/lfe,jjl/lfe,yurrriq/lfe,bsmr-erlang/lfe