Add configurable host

config/puma.rb

@@ -23,8 +23,15 @@
 # terminating a worker in development environments.
 worker_timeout 3600 if ENV.fetch('RAILS_ENV', 'development') == 'development'
 
-# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
-port Sagittarius::Configuration.config[:rails][:web][:port]
+# Specify either a `bind` or `port` to listen on.
+bind_uri = Sagittarius::Configuration.config[:rails][:web][:bind]
+port_number = Sagittarius::Configuration.config[:rails][:web][:port]
+
+if bind_uri
+  bind bind_uri
+else
+  port port_number
+end
 
 # Specifies the `environment` that Puma will run in.
 environment ENV.fetch('RAILS_ENV', 'development')

config/sagittarius.example.yml

@@ -10,6 +10,7 @@ rails:
     password: changeme
   web:
     port: 3000
+    bind: # For example: tcp://0.0.0.0:3000
     force_ssl:
   grpc:
     host: '0.0.0.0:50051'

lib/sagittarius/configuration.rb

@@ -24,6 +24,7 @@ def self.defaults
           web: {
             port: 3000,
             force_ssl: nil,
+            bind: nil,
           },
           grpc: {
             host: '0.0.0.0:50051',