diff --git a/protocol-testing/docker-compose.yaml b/protocol-testing/docker-compose.yaml
index 4e3efa8..297bf5d 100644
--- a/protocol-testing/docker-compose.yaml
+++ b/protocol-testing/docker-compose.yaml
@@ -8,6 +8,7 @@ services:
       POSTGRES_PASSWORD: mypassword
       POSTGRES_USER: postgres
       POSTGRES_DB: tycho_indexer_0
+    command: postgres -c shared_preload_libraries=pg_partman_bgw,pg_cron -c cron.database_name=tycho_indexer_0
     ports:
       - "5431:5432"
     shm_size: "1gb"
diff --git a/protocol-testing/postgres.Dockerfile b/protocol-testing/postgres.Dockerfile
index 6ecffaa..d0d2f4d 100644
--- a/protocol-testing/postgres.Dockerfile
+++ b/protocol-testing/postgres.Dockerfile
@@ -23,9 +23,4 @@ USER root
 COPY --from=builder /usr/local/lib/postgresql/pg_cron.so /usr/local/lib/postgresql/
 COPY --from=builder /usr/local/share/postgresql/extension/pg_cron* /usr/local/share/postgresql/extension/
 
-# Add configuration to postgresql.conf template
-# Start with postgres database, then switch to tycho_indexer_0 after it's created
-RUN echo "shared_preload_libraries = 'pg_partman_bgw,pg_cron'" >> /usr/local/share/postgresql/postgresql.conf.sample \
-    && echo "cron.database_name = 'tycho_indexer_0'" >> /usr/local/share/postgresql/postgresql.conf.sample
-
 USER postgres