Add docker-compose config for tap-tests.

Author: kvap

docker/Dockerfile

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+# vim:set ft=dockerfile:
+FROM debian:jessie
+
+# explicitly set user/group IDs
+RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+
+RUN apt-get update && apt-get install -y git && rm -rf /var/lib/apt/lists/*
+
+RUN apt-get update && apt-get install -y \
+	make \
+	gcc \
+	libreadline-dev \
+	bison \
+	flex \
+	zlib1g-dev \
+	&& rm -rf /var/lib/apt/lists/*
+
+RUN mkdir /pg
+RUN chown postgres:postgres /pg
+
+USER postgres
+
+WORKDIR /pg
+ENV CFLAGS -O0
+RUN git clone -b master https://github.com/postgrespro/postgres_cluster.git --depth 1
+
+WORKDIR /pg/postgres_cluster
+RUN ./configure --enable-cassert --enable-debug --prefix /usr/local
+RUN make -j 4
+USER root
+RUN make install
+RUN make -C contrib/raftable install
+RUN make -C contrib/mmts install
+
+RUN mkdir -p /var/run/postgresql && chown -R postgres /var/run/postgresql
+
+ENV PATH /usr/local/bin:$PATH
+ENV PGDATA /var/run/postgresql/data
+
+COPY docker-entrypoint.sh  /
+
+USER postgres
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+EXPOSE 5432
+EXPOSE 5431
+CMD ["postgres"]

docker/docker-compose.yml

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+version: '2'
+
+networks:
+  clusternet:
+    driver: bridge
+    ipam:
+      driver: default
+      config:
+        - subnet: 10.0.0.0/24
+
+services:
+  node1:
+    build: .
+    networks:
+      clusternet:
+        ipv4_address: 10.0.0.10
+    environment:
+      NODEID: '1'
+      CONNS: 'dbname=postgres host=10.0.0.10 port=5432,dbname=postgres host=10.0.0.20 port=5432,dbname=postgres host=10.0.0.30 port=5432'
+      PEERS: '1:10.0.0.10:5431,2:10.0.0.20:5431,3:10.0.0.30:5431'
+    ports:
+      - "5432:5432"
+      - "5431:5431"
+  node2:
+    build: .
+    networks:
+      clusternet:
+        ipv4_address: 10.0.0.20
+    environment:
+      NODEID: '2'
+      CONNS: 'dbname=postgres host=10.0.0.10 port=5432,dbname=postgres host=10.0.0.20 port=5432,dbname=postgres host=10.0.0.30 port=5432'
+      PEERS: '1:10.0.0.10:5431,2:10.0.0.20:5431,3:10.0.0.30:5431'
+    ports:
+      - "5434:5432"
+      - "5433:5431"
+  node3:
+    build: .
+    networks:
+      clusternet:
+        ipv4_address: 10.0.0.30
+    environment:
+      NODEID: '3'
+      CONNS: 'dbname=postgres host=10.0.0.10 port=5432,dbname=postgres host=10.0.0.20 port=5432,dbname=postgres host=10.0.0.30 port=5432'
+      PEERS: '1:10.0.0.10:5431,2:10.0.0.20:5431,3:10.0.0.30:5431'
+    ports:
+      - "5436:5432"
+      - "5435:5431"

docker/docker-entrypoint.sh

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+#!/bin/bash
+set -e
+
+mkdir -p "$PGDATA"
+chmod 700 "$PGDATA"
+chown -R postgres "$PGDATA"
+
+chmod g+s /run/postgresql
+chown -R postgres /run/postgresql
+
+initdb
+
+cat >> "$PGDATA/pg_hba.conf" <<-EOF
+	host all all 0.0.0.0/0 trust
+	local replication all trust
+	host replication all 0.0.0.0/0 trust
+EOF
+
+cat >> "$PGDATA/postgresql.conf" <<-EOF
+	listen_addresses = '*'
+	unix_socket_directories = ''
+	port = 5432
+	max_prepared_transactions = 200
+	max_connections = 200
+	max_worker_processes = 100
+	wal_level = logical
+	fsync = off	
+	max_wal_senders = 10
+	wal_sender_timeout = 0
+	max_replication_slots = 10
+	shared_preload_libraries = 'raftable,multimaster'
+	multimaster.workers = 10
+	multimaster.queue_size = 10485760 # 10mb
+	multimaster.node_id = $NODEID
+	multimaster.conn_strings = '$CONNS'
+	multimaster.use_raftable = true
+	multimaster.ignore_tables_without_pk = true
+	raftable.id = $NODEID
+	raftable.peers = '$PEERS'
+EOF
+
+"$@"