Add CHANGELOG entry for broken docker build fix
Add CHANGELOG entry for broken docker build fix

jemc/ponyc,Theodus/ponyc,kulibali/ponyc,cquinn/ponyc,Theodus/ponyc,cquinn/ponyc,sgebbie/ponyc,cquinn/ponyc,kulibali/ponyc,ponylang/ponyc,ponylang/ponyc,jemc/ponyc,sgebbie/ponyc,dipinhora/ponyc,kulibali/ponyc,Theodus/ponyc,sgebbie/ponyc,cquinn/ponyc,Theodus/ponyc,ponylang/ponyc,CausalityLtd/ponyc,dipinhora/ponyc,jemc/ponyc,CausalityLtd/ponyc,dipinhora/ponyc,kulibali/ponyc,sgebbie/ponyc,Theodus/ponyc,sgebbie/ponyc,CausalityLtd/ponyc