feat: support setting the application base URL using environment vari…

…able PACT_BROKER_BASE_URL

README.md

@@ -91,6 +91,7 @@ Set the environment variable `PACT_BROKER_LOG_LEVEL` to one of `DEBUG`, `INFO`,
 ## Other environment variables
 
 * PACT_BROKER_PORT - the port that the Pact Broker application runs on. Defaults to 9292.
+* PACT_BROKER_BASE_URL - optional. If you find that the URLs generated by the API are using an IP instead of a hostname, you can set this environment variable to force the desired base URL. Must include the port if it's a non-standard one. eg. `https://my-broker:9292`. Is not currently used for links in the UI.
 * PACT_BROKER_DISABLE_SSL_VERIFICATION - `false` by default, may be set to `true`.
 * PACT_BROKER_BASE_EQUALITY_ONLY_ON_CONTENT_THAT_AFFECTS_VERIFICATION_RESULTS - `true` by default, may be set to `false`.
 * PACT_BROKER_ORDER_VERSIONS_BY_DATE - `true` by default. Setting this to false is deprecated.

pact_broker/config.ru

@@ -12,6 +12,7 @@ app = PactBroker::App.new do | config |
   config.logger = $logger
   config.database_connection = create_database_connection(config.logger)
   config.database_connection.timezone = :utc
+  config.base_url = dc.base_url
   config.webhook_host_whitelist = dc.webhook_host_whitelist
   config.webhook_http_method_whitelist = dc.webhook_http_method_whitelist
   config.webhook_scheme_whitelist = dc.webhook_scheme_whitelist

pact_broker/docker_configuration.rb

@@ -47,6 +47,10 @@ def order_versions_by_date
       end
     end
 
+    def base_url
+      env(:base_url)
+    end
+
     def env name
       @env["PACT_BROKER_#{name.to_s.upcase}"]
     end