feat: container network aliases

[gregnr]

Adds network aliases to each container. Makes networking between containers easier during local development.

For example, to invoke an edge function from Postgres using pg_net, now all you need is:

select
    net.http_post(
      url := 'http://api.supabase.internal:8000/functions/v1/my-function',
      headers := ('{"Content-Type": "application/json", "Authorization": "Bearer <anon_key>"}')::jsonb,
      body := ('{"input": "Hello world"}')::jsonb
    );

instead of trying to determine the container host name http://supabase_kong_my-supabase-project:8000.

Alternatives

Another option would be to use http://host.docker.internal:54321 to route packets through the host, though unsure if this DNS host is supported by all container runtimes.

Long term solution

These are all more short-term solutions - the best solution would be to provide something like:

current_setting('supabase.project.url')

within Postgres to grab the project URL dynamically, regardless of environment (local, preview, prod) like we do with Edge Function default secrets.

[coveralls]

Pull Request Test Coverage Report for Build 6387944488

• 108 of 137 (78.83%) changed or added relevant lines in 9 files are covered.
• 5 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.2%) to 56.875%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/db/reset/reset.go	0	8	0.0%
internal/start/start.go	63	84	75.0%

Files with Coverage Reduction	New Missed Lines	%
internal/gen/keys/keys.go	5	12.31%

Totals
Change from base Build 6377774781:	0.2%
Covered Lines:	5096
Relevant Lines:	8960

---

💛 - Coveralls

[gregnr]

@sweatybridge I've refactored the code to:

1. Generate IDs based on the primary alias
   • I kept the variables for each service ID (since they're used in many places, including tests), and dynamically set them on load based on the primary alias. Let me know if you have any thoughts on this approach.
2. Add networkingConfig to the DockerStart call signature and remove aliases parameter
   • Aliases are now set one level upstream through networkingConfig parameter