building axi tools using Docker

# common tag on rayg/goesr and rayg/himawari projects
TAG=v20180216
bash /path/to/himawari/go.sh v20180216

This will

• start up a docker container,
• install necessary development tools,
• download and install ShellB3 python runtime,
• download himawari and goesr sources,
• install himawari and goesr modules, including any compilation,
• package up a tar ball back to the current directory.