Reduce the size of the image

By combining all of the steps to download the source, build it, and clean up afterward into a single RUN command, and by adding a few extra cleanup steps and CMake options, I reduced the size of this image from about 3 GB to about 500 MB, with no loss of functionality.
Can we swap this to use curly braces instead of parenthesis to prevent the creation of a subshell environment?  See [command grouping](www.gnu.org/software/bash/manual/bashref.html#Command-Grouping) for more information.  Also, can we change those double quotes around `*.a` to single quotes?

Could we swap the `-print` piping to `xargs` to just use `-exec` directly? 

Combining the two we would get: `&& { find /usr/local/mysql -type f -executable -exec strip --strip-all '{}' + || true; }`.