feat(installations): support docker secrets file for encryption key (#4946)

scripts/run.sh

@@ -19,6 +19,11 @@ export AUTH_SECRET=$(openssl rand -base64 32)
 # Cron job API key is generated every time the container starts as it is required for communication between nextjs-api and tasks-api
 export CRON_JOB_API_KEY=$(openssl rand -base64 32)
 
+# Support secret file for encryption key (is not empty and file exists)
+if [ -n "$SECRET_ENCRYPTION_KEY_FILE" ] && [ -f "$SECRET_ENCRYPTION_KEY_FILE" ]; then
+    export SECRET_ENCRYPTION_KEY=$(cat $SECRET_ENCRYPTION_KEY_FILE)
+fi
+
 # Start nginx proxy
 # 1. Replace the HOSTNAME in the nginx template file
 # 2. Create the nginx configuration file from the template