diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e59b6e0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,44 @@
+Murmur server for [Mumble](https://wiki.mumble.info/wiki/Main_Page).
+
+# Volumes
+- `/var/lib/murmur`
+- `/etc/ssl/murmur:ro`: certificates have to be here
+
+# Environment Variables
+## WELCOME_TEXT
+Welcome message sent to clients when they connect.
+
+## SERVER_PASSWORD
+Password to join server.
+
+## PASSWORD_PASSWORD
+Password of the SuperUser.
+
+## MAX_BANDWIDTH
+- default: 72000
+
+Maximum bandwidth (in bits per second) clients are allowed to send speech at.
+
+## MAX_USERS
+- default: 20
+
+Maximum number of concurrent clients allowed.
+
+## CERT_NAME
+- default: fullchain.pem
+
+Name of the certificate file.
+
+## KEY_NAME
+- default: privkey.pem
+
+Name of the key file.
+
+# Ports
+- 64738
+
+# Capabilities
+- DAC_OVERRIDE
+- NET_BIND_SERVICE
+- SETGID
+- SETUID