Docker build fails, getting: failed to connect to proxy No route to host - linux

Question

I am trying to set Prelude SIEM on docker container by following this repository:
https://hub.docker.com/r/2xyo/prelude-siem
When I try to build the container with:
docker build -t prelude .
I get a curl error when trying to reach to the proxy server:
sumaia#main-srv:~/core/docker-prelude-siem$ docker build -t prelude .
Sending build context to Docker daemon 157.2kB
Step 1/37 : FROM centos:centos7
---> eeb6ee3f44bd
Step 2/37 : MAINTAINER 2xyo
---> Using cache
---> 067affd319d1
Step 3/37 : ARG PRELUDE_VERSION
---> Using cache
---> 52efc46cd210
Step 4/37 : ENV PRELUDE_VERSION ${PRELUDE_VERSION:-1.2.6}
---> Using cache
---> 34dfd4af7e35
Step 5/37 : RUN mkdir -p /opt/prelude-src
---> Using cache
---> 8ed92176b862
Step 6/37 : WORKDIR /opt/prelude-src
---> Using cache
---> 817dd04576b6
Step 7/37 : RUN curl https://www.prelude-siem.org/attachments/download/408/libpreludedb-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/409/prelude-correlator-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/410/libprelude-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/411/prelude-lml-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/412/prelude-lml-rules-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/413/prewikka-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/414/prelude-manager-${PRELUDE_VERSION}.tar.gz | tar xz
---> Running in 738d226a8f9f
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- 0:00:03 --:--:-- 0curl: (7) Failed connect to <Proxy IP>:80; No route to host
gzip: stdin: unexpected end of file
tar: Child returned status 1
tar: Error is not recoverable: exiting now
The command '/bin/sh -c curl https://www.prelude-siem.org/attachments/download/408/libpreludedb-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/409/prelude-correlator-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/410/libprelude-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/411/prelude-lml-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/412/prelude-lml-rules-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/413/prewikka-${PRELUDE_VERSION}.tar.gz | tar xz && curl https://www.prelude-siem.org/attachments/download/414/prelude-manager-${PRELUDE_VERSION}.tar.gz | tar xz' returned a non-zero code: 2
sumaia#main-srv:~/core/docker-prelude-siem$
My network is behind proxy, and it has been working on my machine without issues for some time, and docker is able to pull images without issues, here is my ~/.docker/config.json file content:
{
"auths": {
"https://index.docker.io/v1/": {
"auth": "c29tYXl5YWhtb2hkOnZDZ3Y1ampBTThuZ1NNOA=="
}
},
"HttpHeaders": {
"User-Agent": "Docker-Client/19.03.12 (linux)"
},
"proxies": {
"default": {
"httpProxy": "http://<proxy IP>:80",
"httpsProxy": "http://<proxy IP>:80",
"noProxy": "*.internaldomain.net"
}
}
}
am I missing something?

Answer 1

So the issue was due to an old interface that is not disabled, after disabling it, the issue was fixed.