Fixed CI/CD pipeline

Fixed CI/CD pipeline. The build scripts now perform REST calls to
determine the currently available version, determines if there are
any new releases, then builds and deploys them.

This patch also breaks pljava-dev into a separate action so it won't
kill everything when the upstream project moves on from pl/java 1.6.4.

Updated the documentation.

.github/workflows/main.yml

@@ -4,8 +4,8 @@ on:
   push:
     branches:
       - 'main'
-  # schedule:
-  #   - cron: '15 5 * * 1'
+  schedule:
+    - cron: '15 5 * * 1'
 
 defaults:
   run:

.github/workflows/pljava-dev.yml

@@ -0,0 +1,45 @@
+name: Docker PostgreSQL pl/java CI
+
+on:
+  push:
+    branches:
+      - 'main'
+  schedule:
+    - cron: '30 5 * * 1'
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+
+  build-and-push-docker-images:
+    name: Build and push docker images for PostgreSQL + extensions (PL/Java Dev only)
+
+    runs-on: ubuntu-22.04
+
+    env:
+      DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+      DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}
+
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v3
+
+      - name: Install ansible and docker sources
+        run: /usr/bin/sudo /usr/bin/cp build-resources/apt/sources.list.d/* /etc/apt/sources.list.d
+
+      - name: Install ansible and docker keyrings
+        run: /usr/bin/sudo /usr/bin/cp build-resources/keyrings/* /usr/share/keyrings
+
+      - name: Run apt-update
+        run: /usr/bin/sudo /usr/bin/apt-get update
+
+      - name: Install ansible and docker-ce
+        run: /usr/bin/sudo /usr/bin/apt-get install -y ansible ansible-core docker-ce docker-compose-plugin
+
+      - name: Install ansible collections (does not require root)
+        run: /usr/bin/ansible-galaxy install -r src/main/ansible/roles/requirements.yml
+
+      - name: Build and push docker images
+        run: /usr/bin/ansible-playbook src/main/ansible/build-pljava-dev.yml

README-extensions.md

@@ -0,0 +1,120 @@
+# Extensions available at the official PostgreSQL repository
+
+PostgreSQL maintains an official package repository with the latest releases. For instance for Ubuntu
+you should add this to your `/etc/apt/sources.list` file:
+
+```
+# keyring: from 'apt.postgresql.org.gpg'
+deb [arch=amd64 signed-by=/usr/share/keyrings/papt.postgresql.org.gpg] http://apt.postgresql.org/pub/repos/apt jammy-pgdg main
+```
+
+with the specified keyring downloaded and added to your system.
+
+A large number of extensions have already been packaged for your system - you usually do not need
+to take any additional steps beyond installing the respective package.
+
+- pg-activity - Realtime PostgreSQL database server monitoring tool
+- pg-cloudconfig - Set optimized defaults for PostgreSQL in virtual environments
+- pg-cron
+- pg-rage-terminator-14 - PostgreSQL background worker that kill random sessions.
+- pg-rational
+- pg-snakeoil
+- pgagent - job scheduling engine for PostgreSQL
+- pgaudit
+- pgcluu - PostgreSQL performance monitoring and auditing tool
+- pgmemcache
+- pgsphere
+- pgstat - Collects PostgreSQL statistics the same way as a vmstat tool
+- pgtop - PostgreSQL performance monitoring tool akin to top
+- postgis-java
+- postgresql-pgmp - PostgreSQL extension for multiple-precision math
+- postgresql-pllua - PostgreSQL extension for LUA
+- postgresql-plsh - PostgreSQL extension for shell scripts
+
+The debian packages (bookworm and PostgreSQL repo) are
+
+- postgresql-15-asn1oid - ASN.1 OID data type for PostgreSQL
+- postgresql-15-auto-failover - Postgres high availability support
+- postgresql-15-bgw-replstatus - report whether PostgreSQL node is master or standby
+- postgresql-15-credcheck - PostgreSQL username/password checks
+- postgresql-15-cron - Run periodic jobs in PostgreSQL
+- postgresql-15-debversion - Debian version number type for PostgreSQL
+- postgresql-15-decoderbufs - logical decoder output plugin to deliver data as Protocol Buffers
+- postgresql-15-dirtyread - Read dead but unvacuumed tuples from a PostgreSQL relation
+- postgresql-15-extra-window-functions - Extra Window Functions for PostgreSQL
+- postgresql-15-first-last-agg - PostgreSQL extension providing first and last aggregate functions
+- postgresql-15-hll - HyperLogLog extension for PostgreSQL
+- postgresql-15-hypopg - PostgreSQL extension adding support for hypothetical indexes.
+- postgresql-15-icu-ext - PostgreSQL extension exposing functionality from the ICU library
+- postgresql-15-ip4r - IPv4 and IPv6 types for PostgreSQL 15
+- postgresql-15-jsquery - PostgreSQL JSON query language with GIN indexing support
+- postgresql-15-londiste-sql - SQL infrastructure for Londiste
+- postgresql-15-mimeo - specialized, per-table replication between PostgreSQL instances
+- postgresql-15-mysql-fdw - Postgres 15 Foreign Data Wrapper for MySQL
+- postgresql-15-numeral - numeral datatypes for PostgreSQL
+- postgresql-15-ogr-fdw - PostgreSQL foreign data wrapper for OGR
+- postgresql-15-omnidb - PostgreSQL PL/pgSQL debugger extension for OmniDB
+- postgresql-15-oracle-fdw - PostgreSQL Foreign Data Wrapper for Oracle
+- postgresql-15-orafce - Oracle support functions for PostgreSQL 15
+- postgresql-15-partman - PostgreSQL Partition Manager
+- postgresql-15-periods - PERIODs and SYSTEM VERSIONING for PostgreSQL
+- postgresql-15-pgauditlogtofile - PostgreSQL pgAudit Add-On to redirect audit logs
+- postgresql-15-pgaudit - PostgreSQL Audit Extension
+- postgresql-15-pg-catcheck - Postgres system catalog checker
+- postgresql-15-pg-checksums - Activate/deactivate/verify PostgreSQL data checksums
+- postgresql-15-pgextwlist - PostgreSQL Extension Whitelisting
+- postgresql-15-pg-fact-loader - Build fact tables asynchronously with Postgres
+- postgresql-15-pg-failover-slots - High-availability support for PostgreSQL logical replication
+- postgresql-15-pgfincore - set of PostgreSQL functions to manage blocks in memory
+- postgresql-15-pgl-ddl-deploy - Transparent DDL replication for PostgreSQL
+- postgresql-15-pglogical - Logical Replication Extension for PostgreSQL
+- postgresql-15-pglogical-ticker - Have time-based replication delay for pglogical
+- postgresql-15-pgmemcache - PostgreSQL interface to memcached
+- postgresql-15-pgmp - arbitrary precision integers and rationals for PostgreSQL 15
+- postgresql-15-pgpcre - Perl Compatible Regular Expressions (PCRE) extension for PostgreSQL
+- postgresql-15-pgpool2 - connection pool server and replication proxy for PostgreSQL - modules
+- postgresql-15-pgq3 - Generic queue for PostgreSQL
+- postgresql-15-pgq-node - Cascaded queueing on top of PgQ
+- postgresql-15-pg-qualstats - PostgreSQL extension to gather statistics about predicates.
+- postgresql-15-pgrouting - Routing functionality support for PostgreSQL/PostGIS
+- postgresql-15-pgrouting-scripts - Routing functionality support for PostgreSQL/PostGIS - SQL scripts
+- postgresql-15-pgsphere - Spherical data types for PostgreSQL
+- postgresql-15-pg-stat-kcache - PostgreSQL extension to gather per-query kernel statistics.
+- postgresql-15-pgtap - Unit testing framework extension for PostgreSQL 15
+- postgresql-15-pg-track-settings - PostgreSQL extension tracking of configuration settings
+- postgresql-15-pgvector - Open-source vector similarity search for Postgres
+- postgresql-15-pg-wait-sampling - Extension providing statistics about PostgreSQL wait events
+- postgresql-15-pldebugger - PostgreSQL pl/pgsql Debugger API
+- postgresql-15-pljava - Java procedural language for PostgreSQL 15
+- postgresql-15-pllua - Lua procedural language for PostgreSQL 15
+- postgresql-15-plpgsql-check - plpgsql_check extension for PostgreSQL
+- postgresql-15-plprofiler - PostgreSQL PL/pgSQL functions performance profiler
+- postgresql-15-plproxy - database partitioning system for PostgreSQL 15
+- postgresql-15-plr - Procedural language interface between PostgreSQL and R
+- postgresql-15-plsh - PL/sh procedural language for PostgreSQL 15
+- postgresql-15-pointcloud - PostgreSQL extension for storing point cloud (LIDAR) data
+- postgresql-15-postgis-3 - Geographic objects support for PostgreSQL 15
+- postgresql-15-postgis-3-scripts - Geographic objects support for PostgreSQL 15 -- SQL scripts
+- postgresql-15-powa - PostgreSQL Workload Analyzer -- PostgreSQL 15 extension
+- postgresql-15-prefix - Prefix Range module for PostgreSQL
+- postgresql-15-preprepare - pre prepare your PostgreSQL statements server side
+- postgresql-15-prioritize - Get and set the nice priorities of PostgreSQL backends
+- postgresql-15-q3c - PostgreSQL 15 extension used for indexing the sky
+- postgresql-15-rational - Precise fractional arithmetic for PostgreSQL
+- postgresql-15-rdkit - Cheminformatics and machine-learning software (PostgreSQL Cartridge)
+- postgresql-15-repack - reorganize tables in PostgreSQL databases with minimal locks
+- postgresql-15-repmgr - replication manager for PostgreSQL 15
+- postgresql-15-rum - PostgreSQL RUM access method
+- postgresql-15-semver - Semantic version number type for PostgreSQL
+- postgresql-15-set-user - PostgreSQL privilege escalation with enhanced logging and control
+- postgresql-15-show-plans - Show query plans of currently running PostgreSQL statements
+- postgresql-15-similarity - PostgreSQL similarity functions extension
+- postgresql-15-slony1-2 - replication system for PostgreSQL: PostgreSQL 15 server plug-in
+- postgresql-15-snakeoil - PostgreSQL anti-virus scanner based on ClamAV
+- postgresql-15-squeeze - PostgreSQL extension for automatic bloat cleanup
+- postgresql-15-tablelog - log changes on tables and restore tables to point in time
+- postgresql-15-tdigest - t-digest algorithm for on-line accumulation of rank-based statistics
+- postgresql-15-tds-fdw - PostgreSQL foreign data wrapper for TDS databases
+- postgresql-15-toastinfo - Show storage structure of varlena datatypes in PostgreSQL
+- postgresql-15-unit - SI Units for PostgreSQL
+- postgresql-15-wal2json - PostgreSQL logical decoding JSON output plugin