Update Dockerfile

Dockerfile

@@ -20,6 +20,9 @@ RUN curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmo
 # Install PostgreSQL 16 client and server
 RUN apt-get update && apt-get install -y postgresql-client-16 postgresql-server-dev-16
 
+# Create the PostgreSQL user and group
+RUN groupadd -r postgres && useradd -r -g postgres postgres
+
 # Create the PostgreSQL data directory and set permissions
 RUN mkdir -p /var/lib/postgresql/data && \
     chown -R postgres:postgres /var/lib/postgresql/data