Dockerfile rewrite change file perms and add ancillary files

[sparklyballs]

• add the ancillary files

• rewrite dockerfile with added steps and deps etc also tidy it for whitespace and line endings

• change file perms from being executable to git standard perms

• also needs adding docker and core groups as admin otherwise have to make forks and then pr for in-house edits etc

• the init file is confusing as it says symlink but is doing a copy but that's another pr

[tobbenb]

At least he didn't delete anything 😜

[homerr]

The Deletor™

[homerr]

let's merge the sparkly magic then go from there 👍