version: '2.3'
services:
    postgres2:
        image: postgres
        command: ["postgres", "-c", "logging_collector=on", "-c", "log_directory=/postgres/logs", "-c", "log_filename=postgresql.log", "-c", "log_statement=all"]
        restart: always
        environment:
            POSTGRES_HOST_AUTH_METHOD: "trust"
            POSTGRES_PASSWORD: mysecretpassword
            PGDATA: /postgres/data
        expose:
            - ${POSTGRES_PORT}
        volumes:
            - type: ${POSTGRES_LOGS_FS:-tmpfs}
              source: ${POSTGRES2_DIR:-}
              target: /postgres/
    postgres3:
        image: postgres
        command: ["postgres", "-c", "logging_collector=on", "-c", "log_directory=/postgres/logs", "-c", "log_filename=postgresql.log", "-c", "log_statement=all"]
        restart: always
        environment:
            POSTGRES_HOST_AUTH_METHOD: "trust"
            POSTGRES_PASSWORD: mysecretpassword
            PGDATA: /postgres/data
        expose:
            - ${POSTGRES_PORT}
        volumes:
            - type: ${POSTGRES_LOGS_FS:-tmpfs}
              source: ${POSTGRES3_DIR:-}
              target: /postgres/
    postgres4:
        image: postgres
        command: ["postgres", "-c", "logging_collector=on", "-c", "log_directory=/postgres/logs", "-c", "log_filename=postgresql.log", "-c", "log_statement=all"]
        restart: always
        environment:
            POSTGRES_HOST_AUTH_METHOD: "trust"
            POSTGRES_PASSWORD: mysecretpassword
            PGDATA: /postgres/data
        expose:
            - ${POSTGRES_PORT}
        volumes:
            - type: ${POSTGRES_LOGS_FS:-tmpfs}
              source: ${POSTGRES4_DIR:-}
              target: /postgres/