refactor: switch to traefik v3

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No description provided.

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Should route to a different port if specified:

Failing tests (return 404 instead of 200):

curl -s -o /dev/null -I -w "%{http_code}" http://lets.combine.really.lndo.site/everything/for-real | grep 200
curl -s -o /dev/null -I -w "%{http_code}" http://lets.combine.things.lndo.site/everything/for-real | grep 200

Should handle sites in subdirectories:

Failing tests (404 instead of 200):

curl -s -o /dev/null -I -w "%{http_code}" http://lets.combine.really.lndo.site/everything/for-real | grep 200

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proxy:
  web3:
    - "lets.combine.*.lndo.site:8080/everything/for-real"
    - "*.more.web3.lndo.site:8080"
    - web3.lndo.site:8080
    - web4.lndo.site:8080
    - hostname: web5.lndo.site
      port: 8080

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  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0-secured.entrypoints": "https",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0-secured.middlewares": "510d6d3d68c13189d4b27ff98c3606c77a802cd0-lando,510d6d3d68c13189d4b27ff98c3606c77a802cd0-stripprefix",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0-secured.rule": "HostRegexp(`lets.combine.{wildcard:[a-z0-9-]+}.lndo.site`) && PathPrefix(`/everything/for-real`)",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0-secured.service": "510d6d3d68c13189d4b27ff98c3606c77a802cd0-secured-service",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0-secured.tls": "true",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0.entrypoints": "http",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0.middlewares": "510d6d3d68c13189d4b27ff98c3606c77a802cd0-lando,510d6d3d68c13189d4b27ff98c3606c77a802cd0-stripprefix",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0.rule": "HostRegexp(`lets.combine.{wildcard:[a-z0-9-]+}.lndo.site`) && PathPrefix(`/everything/for-real`)",
  "traefik.http.routers.510d6d3d68c13189d4b27ff98c3606c77a802cd0.service": "510d6d3d68c13189d4b27ff98c3606c77a802cd0-service",

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Traefik 3 does not seem to support named regexps.

https://doc.traefik.io/traefik/v2.11/routing/routers/#rule
https://doc.traefik.io/traefik/routing/routers/#rule

-HostRegexp(`lets.combine.{wildcard:[a-z0-9-]+}.lndo.site`)
+HostRegexp(`lets.combine.[a-z0-9-]+.lndo.site`)

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diff --git a/plugins/lando-proxy/lib/utils.js b/plugins/lando-proxy/lib/utils.js
index 102f115e..dca72e25 100644
--- a/plugins/lando-proxy/lib/utils.js
+++ b/plugins/lando-proxy/lib/utils.js
@@ -54,7 +54,7 @@ exports.getProxyRunner = (project, files) => ({
  */
 exports.getRule = rule => {
   // Start with the rule we can assume
-  const hostRegex = rule.host.replace(new RegExp('\\*', 'g'), '{wildcard:[a-z0-9-]+}');
+  const hostRegex = rule.host.replace(new RegExp('\\*', 'g'), '[a-z0-9-]+');
   const rules = [`HostRegexp(\`${hostRegex}\`)`];
   // Add in the path prefix if we can
   if (rule.pathname.length > 1) rules.push(`PathPrefix(\`${rule.pathname}\`)`);

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809e8f9 will break tests because the image is not yet in the ghcr.io container registry. Rerun the failed job once Automattic/vip-container-images#955 is merged and the images are built.