diff --git a/Dockerfile b/Dockerfile
index 2697bf9f..07dd4e59 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -160,11 +160,11 @@ RUN chown app Gemfile.lock
 RUN mkdir -p /var/log/nginx/qul.tarteel.ai
 
 # precompile assets
-RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
+RUN SECRET_KEY_BASE=$(ruby -e "require 'securerandom'; puts SecureRandom.hex(64)") ./bin/rails assets:precompile
 
 #TODO: fix this, sprockets can't find the compiled assets.
 # Compiling twice seems to be working
-RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
+RUN SECRET_KEY_BASE=$(ruby -e "require 'securerandom'; puts SecureRandom.hex(64)") ./bin/rails assets:precompile
 
 # pg_dump
 RUN apt-get install -y wget
diff --git a/docker/README.md b/docker/README.md
index 2f5ef5d8..c5f2ad09 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -1,11 +1,15 @@
 # QUL docker deployment
 
-build the image:
+Build the image:
 ```
 docker build -t quranic-universal-library .
 ```
-run it:
 
+Run it:
 ```
 docker run --rm -it -p 3000:3000 --env RAILS_MASTER_KEY=<content of config/master.key> quranic-universal-library
-```
\ No newline at end of file
+```
+
+## Build Notes
+
+The Docker build process automatically generates a temporary SECRET_KEY_BASE during asset precompilation. This resolves Rails 7.x validation requirements for production environment secret keys during the build process.
\ No newline at end of file