Restructure backend into microservices, add envelope encryption, DM files, and message editing

deployment/init-postgres-entrypoint.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Custom entrypoint for PostgreSQL that processes the init template
+
+set -e
+
+# If this is the first run (data directory is empty), process the template
+if [ ! -f /var/lib/postgresql/data/PG_VERSION ]; then
+    echo "Processing PostgreSQL init template..."
+
+    # Substitute environment variables in the SQL template
+    envsubst < /docker-entrypoint-initdb.d/init-postgres.sql.template > /docker-entrypoint-initdb.d/init-postgres.sql
+
+    echo "Template processing complete."
+else
+    echo "PostgreSQL data directory already exists, skipping template processing."
+fi
+
+# Execute the original PostgreSQL entrypoint
+exec /usr/local/bin/docker-entrypoint.sh "$@"