adjust postgres config

Containerfile

@@ -1,4 +1,8 @@
 ARG base=docker.io/library/postgres:15-bookworm
 FROM $base
 
-RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends postgresql-15-debversion
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends postgresql-15-debversion && \
+    echo 'CREATE EXTENSION debversion' > /docker-entrypoint-initdb.d/create-extension.sql
+
+ADD create-certificate.sh /docker-entrypoint-initdb.d
+ADD postgresql.conf /etc/postgresql/

create-certificate.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+openssl req -newkey rsa:4096 \
+            -x509 \
+            -sha256 \
+            -days 3650 \
+            -nodes \
+            -out /var/lib/postgresql/data/pgdata/server.crt \
+            -keyout /var/lib/postgresql/data/pgdata/server.key \
+            -subj "/C=DE/ST=BW/L=Walldorf/O=Security/OU=IT Department/CN=GLVD"
+
+cp /etc/posttgresql/postgresql.conf /var/lib/postgresql/data/pgdata/.