Alpine: hostname/UUID needs to be quoted

[imrehg]

Using the alpine images, can run into an issue, not being able to start the application:

25.07.16 10:23:07 (+0800) Restarting application 'registry.resin.io/seeed/c67f3e9e16b0d8f0ac1b6292190626dd14280bd1'
25.07.16 10:23:08 (+0800) hostname: unrecognized option: 0
25.07.16 10:23:08 (+0800) Usage: hostname [-v] {hostname|-F file}      set hostname (from file)
25.07.16 10:23:08 (+0800)        domainname [-v] {nisdomain|-F file}   set NIS domainname (from file)
25.07.16 10:23:08 (+0800)        hostname [-v] [-d|-f|-s|-a|-i|-y|-n]  display formatted name
25.07.16 10:23:08 (+0800)        hostname [-v]                         display hostname
25.07.16 10:23:08 (+0800) 
25.07.16 10:23:08 (+0800)        hostname -V|--version|-h|--help       print info and exit
25.07.16 10:23:08 (+0800) 
25.07.16 10:23:08 (+0800)     dnsdomainname=hostname -d, {yp,nis,}domainname=hostname -y
25.07.16 10:23:08 (+0800) 
25.07.16 10:23:08 (+0800)     -s, --short           short host name
25.07.16 10:23:08 (+0800)     -a, --alias           alias names
25.07.16 10:23:08 (+0800)     -i, --ip-address      addresses for the hostname
25.07.16 10:23:08 (+0800)     -f, --fqdn, --long    long host name (FQDN)
25.07.16 10:23:08 (+0800)     -d, --domain          DNS domain name
25.07.16 10:23:08 (+0800)     -y, --yp, --nis       NIS/YP domainname
25.07.16 10:23:08 (+0800)     -F, --file            read hostname or NIS domainname from given file
25.07.16 10:23:08 (+0800) 
25.07.16 10:23:08 (+0800)    This command can read or set the hostname or the NIS domainname. You can
25.07.16 10:23:08 (+0800)    also read the DNS domain or the FQDN (fully qualified domain name).
25.07.16 10:23:08 (+0800)    Unless you are using bind or NIS for host lookups you can change the
25.07.16 10:23:08 (+0800)    FQDN (Fully Qualified Domain Name) and the DNS domain name (which is
25.07.16 10:23:08 (+0800)    part of the FQDN) in the /etc/hosts file.
25.07.16 10:23:08 (+0800) OpenRC init system enabled.
25.07.16 10:23:08 (+0800) /usr/bin/entry.sh: line 39: /sbin/init: No error information
25.07.16 10:23:09 (+0800) 
25.07.16 10:23:09 (+0800) Application exited 'registry.resin.io/seeed/c67f3e9e16b0d8f0ac1b6292190626dd14280bd1'

The UUID of this particular device is 0fb549fe00f9a9c4ba96a45f349b525c4e36498835dc0533b202606bd43d81 and because of the lack of quoting in hostname setting, the leading zero causes an issue.

Should properly quote the relevant variables.