[Docker] Allow easy enabling of NewRelic

.env.sample

@@ -55,3 +55,8 @@
 # JOINER_OAUTH2_CLIENT_SECRET=
 # JOINER_GUILD_ID=
 # JOINER_FAILED_JOIN_WEBHOOK_URL=
+
+# Enable the NewRelic integration
+
+# NEW_RELIC_AGENT_ENABLED=true
+# NEW_RELIC_LICENSE_KEY=your_license_key

Gemfile

@@ -28,6 +28,7 @@ gem 'marcel'
 gem 'sidekiq-unique-jobs'
 gem 'redis'
 gem 'request_store'
+gem 'newrelic_rpm'
 
 gem 'opensearch-ruby'
 
@@ -37,7 +38,6 @@ gem 'resolv'
 group :production do
   gem 'unicorn'
   gem 'unicorn-worker-killer'
-  gem 'newrelic_rpm'
 end
 
 group :development, :test do

docker-compose.yml

@@ -8,6 +8,8 @@ x-environment: &common-env
   DANBOORU_IQDB_SERVER: http://iqdb:5588
   DANBOORU_DISCORD_SITE: http://localhost:8000
   DANBOORU_DISCORD_SECRET: super_secret_for_url_discord
+  NEW_RELIC_AGENT_ENABLED: ${NEW_RELIC_AGENT_ENABLED:-false}
+  NEW_RELIC_LICENSE_KEY: ${NEW_RELIC_LICENSE_KEY:-}
   # These are just development secrets, do not use them in production
   DANBOORU_PROTECTED_FILE_SECRET: 6686a6413d90c43d5e82403ef271ec25d13cc24e3bfcdd094e73d1eff22a3567
   DANBOORU_REPLACEMENT_FILE_SECRET: b35bc54cdc0d0436fc5867c7ef88f9b10a37ae20a06b37e67614fe60019d7bb1