在PostgreSQL docker镜像中创建表

Question

我是码头工人的新手.我已经扩展了PostgreSQL映像,并且能够在运行映像时创建新的数据库实例.我需要在shell脚本中创建表,该脚本将执行.sql文件.在运行PostgreSQL映像时,它说服务器没有启动？我们如何只在PostgreSQL服务器在docker容器中启动后才能执行脚本？

Dockerfile:

FROM postgres:9.3
ENV POSTGRES_USER docker
ENV POSTGRES_PASSWORD docker
ENV POSTGRES_DB docker 
RUN apt-get update && apt-get install -y postgresql-9.3 postgresql-client-9.3 postgresql-contrib-9.3
ADD initialize.sh /home/MM0312/docker-entrypoint-initdb.d/initialize.sh
CMD ["/home/MM0312/docker-entrypoint-initdb.d/initialize.sh"]

initialize.sh

#!/bin/bash
set -e
set -x

echo "******PostgreSQL initialisation******"
gosu docker psql -h localhost -p 5432 -U docker -d $docker -a -f createDatabase.sql

createDatabase.sql文件

CREATE TABLE web_origins (
    client_id character varying(36) NOT NULL,
    value character varying(255)
);

Answer 1

在postgres官方 docker镜像的docker-entrypoint.sh脚本中写道:

psql+=( --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" )

        echo
        for f in /docker-entrypoint-initdb.d/*; do
            case "$f" in
                *.sh)     echo "$0: running $f"; . "$f" ;;
                *.sql)    echo "$0: running $f"; "${psql[@]}" < "$f"; echo ;;
                *.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${psql[@]}"; echo ;;
                *)        echo "$0: ignoring $f" ;;
            esac
            echo
done

因此,您希望在docker镜像中执行的每个.sql文件都可以放在该文件夹中.所以我的dockerfile看起来像

FROM postgres:9.3
ENV POSTGRES_USER docker
ENV POSTGRES_PASSWORD docker
ENV POSTGRES_DB docker
ADD CreateDB.sql /docker-entrypoint-initdb.d/

和我的CreateDB.sql的内容:

CREATE TABLE web_origins (
    client_id character varying(36) NOT NULL,
    value character varying(255)
);

所以我只需启动我的容器:

docker run -d my-postgres

去检查:

docker exec -it 6250aee43d12 bash
root@6250aee43d12:/# psql -h localhost -p 5432 -U docker -d docker
psql (9.3.13)
Type "help" for help.

docker=# \c
You are now connected to database "docker" as user "docker".
docker=# \dt
           List of relations
 Schema |    Name     | Type  | Owner
--------+-------------+-------+--------
 public | web_origins | table | docker
(1 row)

您可以在此博客中找到mysql的详细信息.