[documentation] typing special characters in the container shell

[douglas-legulas]

When I'm testing some SQL I often need to paste or type it on the terminal, and by default special characters (such as #, é, ã) will not output correctly unless you start the container with a UTF-8 locale set (e.g. C.UTF-8).

The Ubuntu image, for example, has this documented. We could at least add a reference to it in the README.

[grooverdan]

If you follow the documentation with ENV LANG C.UTF-8, does it make sense to make that the default in the container? Can you think of a downside?

[grooverdan]

What do you think of #470? Does this solve the problem without hunting for documentation?

[grooverdan]

merged. You shoudn't need to do anything special after next release.