diff --git a/.env.sample b/.env.sample
index c41c343..632dde1 100644
--- a/.env.sample
+++ b/.env.sample
@@ -47,6 +47,9 @@ MAIL_DOMAIN=mgo.example.com
 MAIL_KEY=xyz
 MAIL_FROM=admin@example.com
 
+# error reporting
+SENTRY_DSN=
+
 # Bonfire extensions configs:
 WEB_PUSH_SUBJECT=mailto:admin@example.com
 WEB_PUSH_PUBLIC_KEY=xyz
@@ -75,6 +78,5 @@ REPLACE_OS_VARS=true
 LIVEVIEW_ENABLED=true
 ACME_AGREE=true
 SHOW_DEBUG_IN_DEV=true
-MIX_ENV=prod
 LETS_ENCRYPT_ENV=production
 HOSTNAME=$DOMAIN
diff --git a/compose.yml b/compose.yml
index 070cc4c..75394b6 100644
--- a/compose.yml
+++ b/compose.yml
@@ -13,7 +13,29 @@ services:
       - POSTGRES_USER=postgres
       - POSTGRES_DB=bonfire_db
       - PUBLIC_PORT=443
+      - MIX_ENV=prod
       - HOSTNAME
+      - MAIL_BACKEND
+      - INVITE_ONLY
+      - INSTANCE_DESCRIPTION
+      - DISABLE_DB_AUTOMIGRATION
+      - UPLOAD_LIMIT
+      - INVITE_KEY
+      - MAIL_DOMAIN
+      - MAIL_KEY
+      - MAIL_FROM
+      - SENTRY_DSN
+      - WEB_PUSH_SUBJECT
+      - WEB_PUSH_PUBLIC_KEY
+      - WEB_PUSH_PRIVATE_KEY
+      - GEOLOCATE_OPENCAGEDATA
+      - GITHUB_TOKEN
+      - APP_NAME
+      - LANG
+      - SEEDS_USER
+      - ERLANG_COOKIE
+      - REPLACE_OS_VARS
+      - LIVEVIEW_ENABLED
     secrets: 
       - postgres_password
       - secret_key_base