Openshift 3-覆盖.s2i/bin文件-组装和运行脚本

Question

我希望澄清可以添加到项目repo中.s2i/bin目录中的可能脚本。

文档说，当您添加这些文件时，它们将在构建项目时重写相同名称的默认文件()。例如，如果我将自己的“汇编”文件放置在.s2i/bin目录中，默认的汇编文件也会运行，还是会被脚本完全替换？如果我想要默认文件的一些行为怎么办？我是否必须将默认的“组装”内容复制到我的文件中，以便执行这两种内容？

Answer 1

您将需要从您自己的原始“组装”脚本中调用。类似于此

#!/bin/bash -e
# The assemble script builds the application artifacts from a source and 
# places them into appropriate directories inside the image.

# Execute the default S2I script
source ${STI_SCRIPTS_PATH}/assemble

# You can write S2I scripts in any programming language, as long as the 
# scripts are executable inside the builder image.

Answer 2

使用OpenShift，我想要执行我自己的运行脚本(运行)。因此，我在应用程序的src中添加了一个文件./s2i/run，该文件稍微改变了默认运行文件https://github.com/sclorg/nginx-container/blob/master/1.20/s2i/bin/run。

这是我的运行文件

#!/bin/bash
source /opt/app-root/etc/generate_container_user

set -e

source ${NGINX_CONTAINER_SCRIPTS_PATH}/common.sh

process_extending_files ${NGINX_APP_ROOT}/src/nginx-start ${NGINX_CONTAINER_SCRIPTS_PATH}/nginx-start

if [ ! -v NGINX_LOG_TO_VOLUME -a -v NGINX_LOG_PATH ]; then
    /bin/ln -sf /dev/stdout ${NGINX_LOG_PATH}/access.log
    /bin/ln -sf /dev/stderr ${NGINX_LOG_PATH}/error.log
fi

#nginx will start using the custom nginx.conf from configmap
exec nginx -c /opt/mycompany/mycustomnginx/nginx-conf/nginx.conf -g "daemon    off;"

然后，更改dockerfile以执行我的运行脚本，如下所示，可以调用CMD命令一次，并指示部署荚启动时执行的脚本位于何处。

FROM registry.access.redhat.com/rhscl/nginx-120

# Add application sources to a directory that the assemble script expects them
# and set permissions so that the container runs without root access
USER 0

COPY dist/my-portal /tmp/src

COPY --chmod=0755 s2i /tmp/
RUN ls -la /tmp
USER 1001

# Let the assemble script to install the dependencies
RUN /usr/libexec/s2i/assemble

# Run script uses standard ways to run the application
#CMD /usr/libexec/s2i/run
# here we override the script that will be executed when the deployment pod starts
CMD /tmp/run