diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index 968e09a..b3d47f0 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -23,12 +23,12 @@ FROM ubuntu:bionic-20220401
 
 EXPOSE 8442
 
-ENV BITMESSAGE_API_USER=api
-ENV BITMESSAGE_API_PASSWORD=changeme
-ENV BITMESSAGE_SEED_PHRASE=changeme
+ENV BITMESSAGE_API_USER=bitmessage_api_user
+ENV BITMESSAGE_API_PASSWORD=bitmessage_api_password
+ENV BITMESSAGE_SEED_PHRASE=bitmessage_seed_phrase
 ENV BITMESSAGE_SEED_ADDRESSES=1
 ENV BITMESSAGE_API_PORT=8442
-ENV TTL=172800
+ENV BITMESSAGE_TTL=172800
 
 ENV HOME /home/bitmessage
 ENV BITMESSAGE_HOME ${HOME}
@@ -56,7 +56,7 @@ CMD sed -i -e "s|\(apiinterface = \).*|\10\.0\.0\.0|g" \
         -e "s|\(apipassword = \).*|\1$BITMESSAGE_API_PASSWORD|g" \
         -e "s|\(apiport = \).*|\1$BITMESSAGE_API_PORT|g" \
         -e "s|\(apienabled = \).*|\1True|g" \
-        -e "s|\(ttl = \).*|\1$TTL|g" \
+        -e "s|\(ttl = \).*|\1$BITMESSAGE_TTL|g" \
         -e "s|\(udp = \).*|\1False|g" keys.dat \
         && exec pybitmessage -d
 
diff --git a/README.md b/README.md
index 99b0450..d99483b 100644
--- a/README.md
+++ b/README.md
@@ -18,10 +18,11 @@ services:
   pybitmessage:
     image: bitdeals/pybitmessage
     environment:
-      - BITMESSAGE_API_USER=<API username>
-      - BITMESSAGE_API_PASSWORD=<API password>
-      - BITMESSAGE_SEED_PHRASE=<passphrase>
-      - BITMESSAGE_SEED_ADDRESSES=<1>
+      - BITMESSAGE_API_USER=bitmessage_api_user
+      - BITMESSAGE_API_PASSWORD=bitmessage_api_password
+      - BITMESSAGE_SEED_PHRASE=bitmessage_seed_phrase
+      - BITMESSAGE_SEED_ADDRESSES=1
+      - BITMESSAGE_TTL=172800
     ports:
       - 8442:8442
 ```
@@ -30,10 +31,11 @@ services:
 
 ```sh
 docker run -d \
-  -e BITMESSAGE_API_USER=api \
-  -e BITMESSAGE_API_PASSWORD=changeme \
-  -e BITMESSAGE_SEED_PHRASE=changeme \
+  -e BITMESSAGE_API_USER=bitmessage_api_user \
+  -e BITMESSAGE_API_PASSWORD=bitmessage_api_password \
+  -e BITMESSAGE_SEED_PHRASE=bitmessage_seed_phrase \
   -e BITMESSAGE_SEED_ADDRESSES=1 \
+  -e BITMESSAGE_TTL=172800 \
   -p 8442:8442 \
   bitdeals/pybitmessage
 ```
@@ -45,8 +47,9 @@ Container images are configured using parameters passed at runtime.
 |Parameter|Function|
 |:--------|:-------|
 |-p 8442|XML-RPC API port TCP|
-|-e BITMESSAGE_API_USER=|XML-RPC API user. Default: `api`|
-|-e BITMESSAGE_API_PASSWORD=|XML-RPC API password. Default: `changeme`|
-|-e BITMESSAGE_SEED_PHRASE|Create Deterministic Addresses password. Default: `changeme`|
+|-e BITMESSAGE_API_USER=|XML-RPC API user. Default: `bitmessage_api_user`|
+|-e BITMESSAGE_API_PASSWORD=|XML-RPC API password. Default: `bitmessage_api_password`|
+|-e BITMESSAGE_SEED_PHRASE|Create Deterministic Addresses password. Default: `bitmessage_seed_phrase`|
 |-e BITMESSAGE_SEED_ADDRESSES|Number of Deterministic Addresses to generate. Default: `1`|
+|-e BITMESSAGE_TTL|The expiration of newly send messages, in seconds. Default: `172800`|