Update dockerfile text with correct image

Dockerfile

@@ -8,13 +8,13 @@
 # $ docker run -p 3000:3000 -d --name=secret \
 #   -e SECRET_MASTER_KEY=11111222223333344444555556666677 \ # has to be a secret key of 32 characters
 #   -e SECRET_REDIS_HOST=127.0.0.1 \
-#   secret
+#   hemmeligapp/hemmelig:latest
 #
 #
 # All available env keys
 # ------------------------------
 #
-# $ docker run -p 3000:3000 -d --name=secret \
+# $ docker run -p 3000:3000 -d --name=hemmelig \
 #   -e SECRET_HOSTNAME=example.com \
 #   -e SECRET_PORT=3000 \
 #   -e SECRET_MASTER_KEY=11111222223333344444555556666677 \
@@ -23,7 +23,7 @@
 #   -e SECRET_REDIS_TLS=true \
 #   -e SECRET_REDIS_USER=username \
 #   -e SECRET_REDIS_PASSWORD=glhf \
-#   secret
+#   hemmeligapp/hemmelig:latest
 
 FROM node:lts-alpine