chore: add PostgreSQL 15 images with PostGIS (cloudnative-pg#21)

Closes cloudnative-pg#20

Signed-off-by: Jonathan Gonzalez V <[email protected]>

Author: sxd

PostGIS/15/.versions.json

@@ -0,0 +1,6 @@
+{
+  "BARMAN_VERSION": "3.1.0",
+  "IMAGE_RELEASE_VERSION": "1",
+  "POSTGIS_IMAGE_LAST_UPDATED": "2022-10-17T06:24:09.563303Z",
+  "POSTGIS_IMAGE_VERSION": "15-3.3"
+}

PostGIS/15/Dockerfile

@@ -0,0 +1,52 @@
+# vim:set ft=dockerfile:
+#
+# Copyright The CloudNativePG Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+FROM postgis/postgis:15-3.3
+
+# Do not split the description, otherwise we will see a blank space in the labels
+LABEL name="PostgreSQL + PostGIS Container Images" \
+      vendor="The CloudNativePG Contributors" \
+      version="${PG_VERSION}" \
+      release="1" \
+      summary="PostgreSQL + PostGIS Container images." \
+      description="This Docker image contains PostgreSQL, PostGIS and Barman Cloud based on Postgres 15-3.3."
+
+COPY requirements.txt /
+
+# Install pgaudit
+RUN set -xe; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+	    "postgresql-${PG_MAJOR}-pgaudit" ;\
+	rm -fr /tmp/* ; \
+	rm -rf /var/lib/apt/lists/*;
+
+# Install barman-cloud
+RUN set -xe; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		python3-pip \
+		python3-psycopg2 \
+		python3-setuptools \
+	; \
+	pip3 install --upgrade pip; \
+# TODO: Remove --no-deps once https://github.com/pypa/pip/issues/9644 is solved
+	pip3 install --no-deps -r requirements.txt; \
+	rm -rf /var/lib/apt/lists/*;
+
+# Change the uid of postgres to 26
+RUN usermod -u 26 postgres
+USER 26