Error Docker saying bad file descriptor

Question

 ERROR: Bad file descriptor during apk update in Docker container

fetch http://example.com
ERROR: http://example.com

main: Bad file descriptor
WARNING: Ignoring APKINDEX.70c88391.tar.gz: Bad file descriptor
fetch http://example.com
ERROR: http://example.com: Bad file descriptor
WARNING: Ignoring APKINDEX.5022a8a2.tar.gz: Bad file descriptor
2 errors; 33 distinct packages available

Answer 1

The solution was easy enough. Add these 2 lines to your RUN command:

rm -rf /var/cache/apk && \
mkdir /var/cache/apk && \

In Dockerfile ...

RUN apk add --update --no-cache bash \
    git \
    make \
    clang \
    g++ \
    go && \
    mkdir -p $REPO && \
    mkdir -p $GODIR/src && \
    rm -rf /usr/share/man && \
    rm -rf /var/cache/apk && \
    mkdir /var/cache/apk && \
    apk del git clang

Answer 2

Try modifying your Docker file something like this:

RUN echo http://mirror.yandex.ru/mirrors/alpine/v3.5/main > /etc/apk/repositories; \
    echo http://mirror.yandex.ru/mirrors/alpine/v3.5/community >> /etc/apk/repositories

RUN apk update \
 && apk add --no-cache \
...

Answer 3

It's a DNS lookup error. Just add google DNS servers (8.8.8.8, 8.8.4.4) to your Docker host's deamon config file.

Answer 4

Add the following to your Dockerfile:

RUN echo http://mirror.yandex.ru/mirrors/alpine/v3.5/main > /etc/apk/repositories;
echo http://mirror.yandex.ru/mirrors/alpine/v3.5/community >> /etc/apk/repositories

Comments

I honestly don't think this is a very good idea.

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Why is that so kalgi?

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It's always risky to add packages from non-official sources, you never know what error or change in the configuration it might result into.