r - 在 Zscaler 防火墙后面的 Docker 镜像中发出 HTTPS 请求

Question

我有兴趣在公司 Zscaler 防火墙后面运行这样一个简单的图像:

FROM rocker/r-base
RUN apt-get update && apt-get install libssl-dev
CMD Rscript -e "install.packages('beepr')"

使用 docker build -t test . 构建镜像失败并出现如下错误:

Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification. [IP: ]

我已经尝试了 here 中的一些解决方案但他们不工作。例如:

FROM rocker/r-base

# Add local certificate to Docker
ADD ./zscaler.cer /usr/local/share/ca-certificates/zscaler.crt

# Move the certificate to the cert dir of openssl and update certificates
RUN CERT_DIR=$(openssl version -d | cut -f2 -d \")/certs ; cp /usr/local/share/ca-certificates/zscaler.crt $CERT_DIR ; update-ca-certificates

# Try making https requests
RUN apt-get update && apt-get install libssl-dev
CMD Rscript -e "install.packages('beepr')"

docker build -t test . 仍然存在相同的错误.我已经在线阅读了一些可能的解决方案，但是对于 apt-get，它们都不断失败。或使用 R 安装软件包.有没有人经历过这个并找到了解决办法？

Answer 1

显然，目前的建议有点错误。证书不应进入 /etc/ssl/certs/ (这是 CERT_DIR=$(openssl version -d | cut -f2 -d \")/certs 的结果)，而是在 CERT_DIR=/usr/local/share/ca-certificates/ 上(至少在这个 Ubuntu 图像上)。更改后，update-ca-certificates正确更新证书，所有 HTTPS 请求都成功。
现在应该可以了:

FROM rocker/r-base

# Add local certificate to Docker
ADD ./zscaler.pem /usr/local/share/ca-certificates/ZscalerRootCertificate-2048-SHA256.crt

# update certificates
RUN update-ca-certificates

# Try making https requests
RUN apt-get update && apt-get install libssl-dev
CMD Rscript -e "install.packages('beepr')"