diff --git a/docker-compose.yml b/docker-compose.yml
index 2b71d5b..7df8628 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,19 +1,16 @@
 version: '3'
 services:
   hermes:
-    # either build image with run.sh before running or adapt image to point to Docker Hub: e.g. sven0311tum/hermes:latest
-    image: hermes
+    image: hermes # TODO: Replace with the image tag from github
     container_name: hermes
     ports:
       - "17333:8080"
     environment:
+      - APNS_CERTIFICATE_PWD
+      - APNS_PROD_ENVIRONMENT
       - APNS_CERTIFICATE_PATH=/key/artemis-apns.p12
-      # adapt the following line
-      - APNS_CERTIFICATE_PWD=<pwd_for_certificate>
-      - APNS_PROD_ENVIRONMENT=false
       - GOOGLE_APPLICATION_CREDENTIALS=/firebase.json
     volumes:
-      # adapt the following lines
-      - <path_to_apns_certificate>:/key/artemis-apns.p12
-      - <path_to_google_credentials_json>:/firebase.json
+      - ${APNS_CERT_PATH}:/key/artemis-apns.p12
+      - ${GOOGLE_APPLICATION_CREDENTIALS_JSON}:/firebase.json
     restart: on-failure
diff --git a/example.env b/example.env
new file mode 100644
index 0000000..71c27ec
--- /dev/null
+++ b/example.env
@@ -0,0 +1,8 @@
+# APNS configuration
+APNS_PROD_ENVIRONMENT=false
+APNS_CERT_PATH=/key/artemis-apns.p12
+APNS_CERTIFICATE_PWD=<pwd_for_certificate>
+
+
+# Firebase configuration
+GOOGLE_APPLICATION_CREDENTIALS_JSON=/firebase.json