diff --git a/.env.sample b/.env.sample
index a3a0b9f..f75e5c1 100644
--- a/.env.sample
+++ b/.env.sample
@@ -4,3 +4,6 @@ DOMAIN=rstudio.example.com
 LETS_ENCRYPT_ENV=production
 
 SECRET_ADMIN_PASSWORD_VERSION=v1
+
+# MSSQL driver
+COMPOSE_FILE="compose.yml:compose.mssql.yml"
diff --git a/compose.mssql.yml b/compose.mssql.yml
new file mode 100644
index 0000000..86a4972
--- /dev/null
+++ b/compose.mssql.yml
@@ -0,0 +1,6 @@
+---
+version: "3.8"
+
+services:
+  app:
+    image: decentral1se/tidyverse-msodbcsql17:4.1.0