The process class relies on proc_open, which is not available on your php installation.

1. Since the yiisoft/yii2-composer (2.0.7) cannot be downloaded from dist, now try to download from the source code, the process class depends on proc_open , which is not available in php installation, as shown in Figure 1

Figure 1

2. Edit Dockerfile, delete proc_open, proc_close in disable_functions

from registry-vpc.cn-beijing.aliyuncs.com/cmc/centos-nginx112-php71:0.2.4

Maintainer wjtester@sobey.com

run sed -is/open_basedir = .\/:\/sobey:\/tmp:\/data:\/webtv/;open_basedir = .\/:\/sobey:\/tmp:\/data:\/webtv:\/usr\/local\/php/g/usr/local/php/etc/php.ini && \
sed-is/allow_url_fopen = off/allow_url_fopen = on/g/usr/local/php/etc/php.ini && \
sed-is/disable_functions = exec, system, passthru, shell_exec, escapeshellarg, escapeshel lcmd,proc_close,proc_open,dl,popen,show/disable_functions = system,passthru,shell_exec,escapeshellarg,escapeshellcmd,dl,popen,show/g/usr/local/php/etc/php.ini

copy code /sobey/www/pcs-api
copy code/build/c_files/ /

run chown -r nginx:nginx /sobey/www/ && \
rm -rf /etc/nginx/conf.d/status.conf && \
chmod +x /usr/local/bin/composer && \
cd /sobey/www/pcs-api && \
composer install

3. The previous proc_open and proc_close were also disabled and can be built normally, because you can download yiisoft/yii2-composer normally from dist (2.0.6), therefore, it will not be downloaded from the source code, and proc_open and proc_close will not be used, as shown in Figure 2

Figure 2

4. Rebuild the image, download from the source code, and the build is successful, as shown in Figure 3

Figure 3