diff --git a/Dockerfile b/Dockerfile
index d60dc5a..3bf5827 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,6 +19,8 @@ ENV RAILS_ENV production
 ENV RACK_ENV production
 ENV NODE_ENV production
 
+ENV SECRET_KEY_BASE="08898973823f6f1d121ce30fb8adc1c559dcfc08f358cfc0298e4aad81b8c9d798e8249e3a4b26c04255cf8b2d71eaf8eda865d173ae3fe6fb1a599d1b1fa260"
+
 RUN git clone https://github.com/snibox/snibox.git /app && cd /app && git reset --hard $GIT_HASH
 
 COPY . /app
diff --git a/README.md b/README.md
index f3a6816..3bd3745 100644
--- a/README.md
+++ b/README.md
@@ -34,3 +34,7 @@ docker run -d --name snibox \
 `DATABASE` - Defines sqlite3 database file location within container.
 
 _Default_: `/app/db/database/snibox.sqlite3`
+
+---
+
+`SECRET_KEY_BASE` - Defines `secret_key_base` parameter for your Rails application. Default one is included into the image already, but general recommendation is to change it.
\ No newline at end of file
diff --git a/config/database.yml b/config/database.yml
index 8b5ae3f..56175d6 100644
--- a/config/database.yml
+++ b/config/database.yml
@@ -2,4 +2,4 @@ production:
   adapter: sqlite3
   pool: 5
   timeout: 5000
-  database: <%= ENV['DATABASE'] || "db/database/snibox.sqlite3" %>
+  database: <%= ENV['DATABASE'] || "db/database/snibox.sqlite3" %>
\ No newline at end of file