Solving the SSL root certificates issue

Aijin Yuan (Vince)
1 min readSep 8, 2015

I created a docker container for a golang app, based on debian 7 image. Everything works well until it visits https. The error is x509: failed to load system roots and no roots provided.

I thought there might be something that should be configured for golang. But actually, it is nothing about golang. It’s about SSL certificates. For debian, /etc/ssl/certs/ca-certificates.crt is the root certificates. But the offical debian 7 image does not contain it. Installing ca-certificates via apt-get solved the problem. (You can manually copy /etc/ssl/certs/ca-certificates.crt from another linux OS too.)

Dockerfile:

FROM debian:7
RUN apt-get update \
&& apt-get install -y --force-yes --no-install-recommends \
apt-transport-https \
curl \
ca-certificates \
&& apt-get clean \
&& apt-get autoremove \
&& rm -rf /var/lib/apt/lists/*

Originally published at vinceyuan.github.io on September 8, 2015.

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Aijin Yuan (Vince)

iOS/Android/Web developer. UX engineering lead at Grab. Singapore/Hong Kong/Shanghai