Add support for providing multiple dns servers

[syphernl]

to:
cc: @subspacecommunity/subspace-maintainers
related to:
resolves:

Background

Out of the box Subspace only accepts a single nameserver. In order to prevent issues when it's unavailable, it would be nice to configure more than one.

Changes

• Renamed SUBSPACE_NAMESERVER to SUBSPACE_NAMESERVERS
• Added support for providing a comma-separated list of nameservers (e.g. SUBSPACE_NAMESERVERS=1.1.1.1,8.8.8.8,9.9.9.9)
• Changed the default value of SUBSPACE_NAMESERVERS to 1.1.1.1,1.0.0.1

Testing

Local container was built and spun-up.

Config

SUBSPACE_NAMESERVER=1.1.1.1,8.8.8.8,9.9.9.9

Results in:

subspace    | dnsmasq: using nameserver 1.1.1.1#53
subspace    | dnsmasq: using nameserver 8.8.8.8#53
subspace    | dnsmasq: using nameserver 9.9.9.9#53

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
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[agonbar]

@all-contributors please add @syphernl for code

[allcontributors]

@agonbar

I've put up a pull request to add @syphernl! 🎉