Bind to both IPv6 and IPv4 interfaces by default

As discussed in https://github.com/Freika/dawarich/issues/498 - not tested as there appears to be no scaffolding to test this functionality?

Procfile.dev

@@ -1 +1 @@
-web: bin/rails server -p 3000 -b 0.0.0.0
+web: bin/rails server -p 3000 -b ::

Procfile.prometheus.dev

@@ -1,2 +1,2 @@
-prometheus_exporter: bundle exec prometheus_exporter -b 0.0.0.0
-web: bin/rails server -p 3000 -b 0.0.0.0
+prometheus_exporter: bundle exec prometheus_exporter -b ANY
+web: bin/rails server -p 3000 -b ::

config/puma.rb

@@ -50,7 +50,7 @@ if ENV['PROMETHEUS_EXPORTER_ENABLED'].to_s == 'true'
 
   before_fork do
     PrometheusExporter::Client.default = PrometheusExporter::Client.new(
-      host: ENV.fetch('PROMETHEUS_EXPORTER_HOST', '0.0.0.0'),
+      host: ENV.fetch('PROMETHEUS_EXPORTER_HOST', 'ANY'),
       port: ENV.fetch('PROMETHEUS_EXPORTER_PORT', 9394)
     )
   end

docs/How_to_install_Dawarich_in_k8s.md

@@ -7,6 +7,7 @@
 - Working Postgres and Redis instances. In this example Postgres lives in 'db' namespace and Redis in 'redis' namespace.
 - Ngingx ingress controller with Letsencrypt integeation.
 - This example uses 'example.com' as a domain name, you want to change it to your own.
+- This will work on IPv4 and IPv6 Single Stack clusters, as well as Dual Stack deployments.
 
 ## Installation
 
@@ -149,7 +150,7 @@ spec:
           command:
             - "dev-entrypoint.sh"
           args:
-            - "bin/rails server -p 3000 -b 0.0.0.0"
+            - "bin/rails server -p 3000 -b ::"
           resources:
             requests:
               memory: "1Gi"