Build Docker Container - docker

Question

In the context of a project, I have to run an sbt application in a Docker container.
That's why I created a Dockerfile, but when I try to build the container, I got an error but I don't understand why.
My code looks like this:
FROM centos:latest
RUN curl -LO "https://nodejs.org/dist/latest/node-v10.7.0-linux-x64.tar.gz" && tar -xzf node-v10.7.0-linux-x64.tar.gz -C /usr/local --strip-components=1 && rm node-v0.12.5-linux-x64.tar.gz
ADD app/abc/
WORKDIR /app
RUN npm install
RUN npm run build
CMD sbt plt/run
EXPOSE 9001
And that's the error:
Sending build context to Docker daemon 745.3MB
Step 1/8 : FROM centos:latest
---> 49f7960eb7e4
Step 2/8 : RUN curl -LO "https://nodejs.org/dist/latest/node-v10.7.0-linux-x64.tar.gz" && tar -xzf node-v10.7.0-linux-x64.tar.gz -C /usr/local --strip-components=1 && rm node-v0.12.5-linux-x64.tar.gz -o StrictHostKeyChecking=no
---> Running in d863c7cb398e
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- 0:00:09 --:--:-- 0curl: (6) Could not resolve host: nodejs.org; Unknown error
The command '/bin/sh -c curl -LO "https://nodejs.org/dist/latest/node-v10.7.0-linux-x64.tar.gz" && tar -xzf node-v10.7.0-linux-x64.tar.gz -C /usr/local --strip-components=1 && rm node-v0.12.5-linux-x64.tar.gz -o StrictHostKeyChecking=no' returned a non-zero code: 6
Did someone know what's the issue ?
Thanks a lot.
F.M

Answer 1

The message returned a non-zero code means the command failed.
If you read the previous line, curl returned the following error: Could not resolve host: nodejs.org; Unknown error.
It means that during the build, you couldn't access to th "nodejs.org" hostname.
I also can't use your command line (I have the same error). You should follow their documentation for installing Node.js for CentOS:
RUN curl --silent --location https://rpm.nodesource.com/setup_10.x | bash - && yum -y install nodejs
If you can use another system than CentOS, you could use a Node.JS base image from hub.docker.com.
In your Dockerfile:
FROM node:8 (or another version)