Docker 问题，入口点 file.sh 无法识别 sun-exec 命令

Question

我正在尝试构建一个具有弹性搜索运行的 docker 图像，并从该图像创建一个容器。

下面是我的 Dockerfile 的内容：

FROM adoptopenjdk/openjdk8:alpine

MAINTAINER rando

COPY  elasticsearch-2.1.1.tar.gz /tmp

RUN    cd /tmp  \
    && tar -xzf  elasticsearch-2.1.1.tar.gz  \ 
    && ls    \
    && mv elasticsearch-2.1.1   /usr/share/elasticsearch   \
    && ls /usr/share \
       && adduser -DH -s /sbin/nologin elasticsearch \
       && chown -R elasticsearch:elasticsearch /usr/share/elasticsearch \
       && echo "Creating Elasticsearch Paths..." \
       && for path in /usr/share/elasticsearch/data /usr/share/elasticsearch/logs /usr/share/elasticsearch/config /usr/share/elasticsearch/config/scripts /usr/share/elasticsearch/plugins ; do mkdir -p "$path"; done \
       && chown -R elasticsearch:elasticsearch /usr/share/elasticsearch \
       && ls /usr/share/elasticsearch 

COPY elasticsearch.yml  /usr/share/elasticsearch/config
COPY elastic-entrypoint.sh /
RUN chmod +x /elastic-entrypoint.sh 

ENV  ES_HOME=/usr/share/elasticsearch   
ENV  PATH=${ES_HOME}/bin:${PATH}

RUN echo "$PATH"

VOLUME ["/usr/share/elasticsearch/data"]

EXPOSE 9200 9300

ENTRYPOINT ["/elastic-entrypoint.sh"]

CMD ["elasticsearch"]

我要在运行以下命令时从 docker 文件成功构建映像：

docker build -t elasticsearch .

当我尝试使用以下命令创建容器时，我遇到了一些问题：

docker run -d --network host elasticsearch

容器已创建但直接终止。

以下是运行容器docker日志时的内容：

/elastic-entrypoint.sh: exec: line 20: su-exec: not found

下面是elastic-entrypoint.sh文件的内容：

#!/bin/sh

set -e

# Add elasticsearch as command if needed
if [ "${1:0:1}" = '-' ]; then
    set -- elasticsearch "$@"
fi

# Drop root privileges if we are running elasticsearch
# allow the container to be started with `--user`
if [ "" = 'elasticsearch' -a "$(id -u)" = '0' ]; then
    # Change the ownership of /usr/share/elasticsearch/data to elasticsearch
    chown -R elasticsearch:elasticsearch /usr/share/elasticsearch/data

    set -- su-exec elasticsearch tini -- "$@"
fi


exec "$@"

好像set -- su-exec elasticsearch tini -- "$@"没用

对于解决此问题的任何帮助或指导，我将不胜感激。

此致，兰多.

更新...................................... ...............

我修改了文件如下：

    #set -- su-exec elasticsearch tini -- "$@"
    set -- su -c elasticsearch tini -- "$@"

显示错误：

su: unknown user tini

无法识别用户。

更新 2................................................ .....................

我通过添加安装 su-exe 的命令修改了 docker 文件，如下所示：

# Install required packages
RUN apk add --no-cache bash su-exec

容器退出并出现以下错误：

su-exec: tini: No such file or directory

Answer 1

尝试使用set -- su -c elasticsearch tini -- "$@"

此外，您不需要在 Dockerfile 中定义 CMD ["elasticsearch"]。只需放入 elastic-entrypoint.sh 文件即可。

Answer 2

错误的原因是adoptopenjdk/openjdk8:alpine没有包含su-exec包。我修改了 dockerfile 如下：

FROM adoptopenjdk/openjdk8:alpine

MAINTAINER rando

# Install required packages
RUN apk add --no-cache bash su-exec
RUN apk add --update tini

COPY  elasticsearch-2.1.1.tar.gz /tmp

...

添加 su-exec 包解决了我的问题。

Docker 问题，入口点 file.sh 无法识别 sun-exec 命令

Docker Problem, entrypoint file.sh doesnt recognize the su-exec command

linux

elasticsearch

docker

alpine