From 0cc93280bbe844523c3a32ecc13b4f89f6efd6b2 Mon Sep 17 00:00:00 2001
From: Konstantin Gredeskoul <kigster@gmail.com>
Date: Fri, 26 Apr 2024 15:48:48 -0700
Subject: [PATCH] Remove config/master.key from Docker Image

---
 Dockerfile            | 3 +++
 bin/docker-entrypoint | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 272250f4..b5d453b6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -88,6 +88,9 @@ EXPOSE 3000
 
 RUN chmod 755 /rails/bin/docker-entrypoint
 
+# Remove master key so that the Docker image does not have it
+RUN rm -f config/master.key
+
 ENV RAILS_ENV=production
 
 # Entrypoint prepares the database.
diff --git a/bin/docker-entrypoint b/bin/docker-entrypoint
index 511f44a9..95fb4ad0 100755
--- a/bin/docker-entrypoint
+++ b/bin/docker-entrypoint
@@ -25,6 +25,11 @@ if [[ -z "${LD_PRELOAD+x}" ]] && [[ -f /usr/lib/*/libjemalloc.so.2 ]]; then
   export LD_PRELOAD="$(echo /usr/lib/*/libjemalloc.so.2)"
 fi
 
+# Create config/master.key from the env variable
+if [[ -n ${RAILS_MASTER_KEY} && ! -s config/master.key ]]; then
+  echo -n ${RAILS_MASTER_KEY} > config/master.key
+fi
+
 # If running the rails server then create or migrate existing database
 if [[ "${1}" == "./bin/rails" ]] && [[ "${2}" == "server" ]]; then
   ./bin/rails db:prepare