ASP.NET Core项目部署在Linux容器中会出现GDI错误 因为在项目中使用了生成验证码导致
解决方案：
RUN echo "deb http://mirrors.163.com/debian/ stretch main non-free contrib" > /etc/apt/sources.list && \ echo "deb http://mirrors.163.com/debian/ stretch-updates main non-free contrib" >> /etc/apt/sources.list && \ echo "deb http://mirrors.163.com/debian/ stretch-backports main non-free contrib" >> /etc/apt/sources.list && \ echo "deb-src http://mirrors.163.com/debian/ stretch main non-free contrib" >> /etc/apt/sources.list && \ echo "deb-src http://mirrors.163.com/debian/ stretch-updates main non-free contrib" >> /etc/apt/sources.list && \ echo "deb-src http://mirrors.163.com/debian/ stretch-backports main non-free contrib" >> /etc/apt/sources.list && \ echo "deb http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib" >> /etc/apt/sources.list && \ echo "deb-src http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib" >> /etc/apt/sources.list && \ apt-get update && \ apt-get install libgdiplus libc6-dev -y && \ ln -s /usr/lib/libgdiplus.so /usr/lib/gdiplus.dll && \ ln -s /usr/lib/x86_64-linux-gnu/libdl.so /usr/lib/libdl.dll
在dockerfile添加上述文件