Add relative imports, small bugfixes

testing/postgres.Dockerfile

@@ -0,0 +1,16 @@
+# This Dockerfile creates a custom postgres image used for CI and local deployment.
+# This is required because we use some postgres extensions that aren't in the generic Postgres image such as pg_partman or pg_cron.
+
+# As an image with pg_partman already exist, we start from this one an add pg_cron and possibly other extensions on top of that.
+FROM ghcr.io/dbsystel/postgresql-partman:15-5
+ARG PGCRON_VERSION="1.6.2"
+USER root
+RUN cd /tmp \
+    && wget "https://github.com/citusdata/pg_cron/archive/refs/tags/v${PGCRON_VERSION}.tar.gz" \
+    && tar zxf v${PGCRON_VERSION}.tar.gz \
+    && cd pg_cron-${PGCRON_VERSION} \
+    && make \
+    && make install \
+    && cd .. && rm -r pg_cron-${PGCRON_VERSION} v${PGCRON_VERSION}.tar.gz
+RUN echo "cron.database_name = 'tycho_indexer_0'" >> /opt/bitnami/postgresql/conf/postgresql.conf
+USER 1001