Update Dockerfile

Dockerfile

@@ -31,6 +31,9 @@ RUN apt-get update \
 # Switch to the root user
 USER root
 
+# Create the postgres user and group
+RUN groupadd -r postgres && useradd --no-log-init -r -g postgres postgres
+
 # Copy the built virtual environment from the builder stage
 COPY --from=builder /usr/local /usr/local