Problems installing csvtk with Docker using debian:stretch-slim - docker

Question

I am a newbie to Docker and I am trying to install csvtk via Docker using debian:stretch-slim.
This below is my Dockerfile
FROM debian:stretch-slim
RUN apt-get update \
&& apt-get install -y --no-install-recommends \
jq \
perl \
python3 \
wget \
&& rm -rf /var/lib/apt/lists/*
RUN wget -qO- https://github.com/shenwei356/csvtk/releases/download/v0.23.0/csvtk_linux_amd64.tar.gz | tar -xz \
&& cp csvtk /usr/local/bin/
It fails at the csvtk step with the below error message:
Step 3/3 : RUN wget -qO- https://github.com/shenwei356/csvtk/releases/download/v0.23.0/csvtk_linux_amd64.tar.gz | tar -xz && cp csvtk /usr/local/bin/
---> Running in 0f3a0e75a5de
gzip: stdin: unexpected end of file
tar: Child returned status 1
tar: Error is not recoverable: exiting now
The command '/bin/sh -c wget -qO- https://github.com/shenwei356/csvtk/releases/download/v0.23.0/csvtk_linux_amd64.tar.gz | tar -xz && cp csvtk /usr/local/bin/' returned a non-zero code: 2
I would appreciate any help/suggestions.
Thanks in advance.

Answer 1

wget was exiting with error code meaning 5 SSL verification failed on wget. From this answer, you just needed to install ca-certificates before wget.
This Dockerfile should build successfully:
FROM debian:stretch-slim
RUN apt-get update \
&& apt-get install -y --no-install-recommends \
jq \
perl \
python3 \
wget \
# added this package to help with ssl certs in Docker
ca-certificates \
&& rm -rf /var/lib/apt/lists/*
RUN wget -qO- https://github.com/shenwei356/csvtk/releases/download/v0.23.0/csvtk_linux_amd64.tar.gz | tar -xz \
&& cp csvtk /usr/local/bin/
As a general tip when debugging issues like these, it's likely easiest to remove the offending RUN line from your Dockerfile and then try building and running the container in a shell and manually executing the commands you want. Like this:
docker build -t test:v1 .
docker run --rm -it test:v1 /bin/bash
# run commands manually and check the full error output
While combining different RUN instructions with && is best practice to reduce the number of image layers, it's difficult to debug when building.