Error for Curl in docker file in .net core 6.0

Question

I have modified the docker file as per the recommendations for .net core6.0. However i face error in executing the curl url in the docker file.

The command is:

RUN curl https://raw.githubusercontent.com/rdvojmoc/DinkToPdf/master/v0.12.4/64%20bit/libwkhtmltox.so --output libwkhtmltox.so

While deploying i get the error:

... docker build: executor failed running [/bin/sh -c curl https://raw.githubusercontent.com/rdvojmoc/DinkToPdf/master/v0.12.4/64%20bit/libwkhtmltox.so --output libwkhtmltox.so]: exit code: 127

Can anyone please provide any clue?

How to execute the curl urls in docker file for .net core 6.0

Answer 1

Chances are that curl isn't installed in the container. You could install it by adding the line

RUN apt-get update \
    && apt-get install -y curl

This would be as in the Dockerfile

FROM mcr.microsoft.com/dotnet/aspnet:6.0

RUN apt-get update \
    && apt-get install -y curl

CMD ["curl", "google.com"]