如何使用docker solrs映像扩展机制创建solr核心?

我想创建一个solr的docker映像,在启动时创建一个core。所以我用 docker-entrypoint-initdb.d extension mechanism 为solr docker容器描述。文件上说

在启动时创建核心的第三种方法是使用映像 下一节将解释扩展机制。

我使用的Dockerfile是:

FROM solr:6.6

USER root

RUN mkdir /A12Core && chown -R solr:solr /A12Core

COPY --chown=solr:solr ./services-core/search/A12Core /A12Core/
COPY --chown=solr:solr ./create-a12core.sh /docker-entrypoint-initdb.d/

USER solr

RUN chmod -R a+X /A12Core

文件夹 A12Core 包含核心的solr配置文件。剧本呢 create-a12core.sh 创建核心是:

#!/bin/bash

solr-precreate A12Core /A12Core

这个 /A12Core 目录包含以下文件:

./core.properties
./conf
./conf/update-script.js
./conf/mapping-ISOLatin1Accent.txt
./conf/schema.xml
./conf/spellings.txt
./conf/solrconfig.xml
./conf/currency.xml
./conf/mapping-FoldToASCII.txt
./conf/_schema_analysis_stopwords_english.json
./conf/stopwords.txt
./conf/synonyms.txt
./conf/elevate.xml
./conf/lang
./conf/lang/stopwords_en.txt
./conf/lang/stopwords_de.txt

但是,当使用上述Dockerfile和脚本开始图像构建时,似乎会创建一个无限循环。输出为:

/opt/docker-solr/scripts/solr-foreground: running /docker-entrypoint-initdb.d/create-a12core.sh
Executing /opt/docker-solr/scripts/solr-precreate A12Core /A12Core
/opt/docker-solr/scripts/solr-precreate: running /docker-entrypoint-initdb.d/create-a12core.sh
Executing /opt/docker-solr/scripts/solr-precreate A12Core /A12Core
/opt/docker-solr/scripts/solr-precreate: running /docker-entrypoint-initdb.d/create-a12core.sh
Executing /opt/docker-solr/scripts/solr-precreate A12Core /A12Core
/opt/docker-solr/scripts/solr-precreate: running /docker-entrypoint-initdb.d/create-a12core.sh
...

如何使用 docker入口点initdb.d