tkda-h3

Results 2 issues of tkda-h3

I solved #66 . When I run `docker build .` , locale-gen was not found.

``` $ docker build . Step 3/16 : RUN locale-gen en_US.UTF-8 ---> Running in XXXXXXXXX /bin/sh: 1: locale-gen: not found The command '/bin/sh -c locale-gen en_US.UTF-8' returned a non-zero code:...