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Dockerfile Error while giving RUN command – CentOS

I am trying to learn Docker and I am on Oracle VMware on CentOS8. I am trying to build a Dockerfile. Here is the content of the file Dockerfile:

FROM centos

RUN yum -y install httpd

When I build, it throws the error below:

[arijhit@localhost docker-images]$ docker build --tag centos_apache:v1 .

Sending build context to Docker daemon  2.048kB

Step 1/2 : FROM centos
 ---> 0d120b6ccaa8

Step 2/2 : RUN yum -y install httpd
 ---> Running in 1f20ba141039
CentOS-8 - AppStream                            0.0  B/s |   0  B     00:30    

Errors during downloading metadata for repository 'AppStream':
  - Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org]

Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org]**

The command '/bin/sh -c yum -y install httpd' returned a non-zero code: 1

Can someone please help rectify this?

Edit:

Hi @Uberhumus Here is the response from CentOS docker image for the commands you said

[arijhit@localhost ~]$ docker run -t -d centos 60566bb1a2ef808c59c0374c0e9753bc26f0098c8b54c438e7742af418beae3a

[arijhit@localhost ~]$ docker p
CONTAINER ID        IMAGE             COMMAND                  CREATED             STATUS              PORTS NAMES
60566bb1a2ef        centos              "/bin/bash"              20 seconds ago      Up 8 seconds                            laughing_greider
5d3efb03c67a        nginx:alpine        "/docker-entrypoint.…"   6 minutes ago       Up 5 minutes        80/tcp              kind_tesla

[arijhit@localhost ~]$ docker exec -it laughing_greider /bin/bash

[root@60566bb1a2ef /]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=115 time=31.4 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=115 time=168 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=115 time=47.3 ms 
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 5ms 
rtt min/avg/max/mdev = 31.357/82.241/168.110/61.064 ms

[root@60566bb1a2ef /]# yum check-update
Failed to set locale, defaulting to C.UTF-8
CentOS-8 - AppStream 0.0  B/s |   0  B     00:30
Errors during downloading metadata for repository 'AppStream':
  - Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org] Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org]

[root@60566bb1a2ef /]# yum -y install httpd
Failed to set locale, defaulting to C.UTF-8
CentOS-8 - AppStream 0.0  B/s |   0  B     00:30
Errors during downloading metadata for repository 'AppStream':
  - Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org] Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=container [Could not resolve host: mirrorlist.centos.org]
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2

Answers


  1. Chosen as BEST ANSWER
    0

    Dear All the following solved my problem.

    firewall-cmd --permanent --zone=trusted --add-interface=docker0

firewall-cmd --reload

    Found it here: https://forums.centos.org/viewtopic.php?f=54&t=74270

    Many thanks to everyone here...


  2. 0

    I tried to build your Dockerfile and I’ve gotten an error too, albeit a different one.

    Below are working Dockerfiles for CentOS 7 and CentOS 8 respectively:

    FROM centos:7

RUN yum -y install httpd

EXPOSE 80

ENTRYPOINT [ "/usr/sbin/httpd" ]
CMD [ "-D", "FOREGROUND"]

    and

    FROM centos:8

RUN yum clean all && 
    yum -y update && 
    yum -y install httpd

EXPOSE 80

ENTRYPOINT [ "/usr/sbin/httpd" ]
CMD [ "-D", "FOREGROUND"]

    Let me know if either of those works for you.

    Edit:

    I put the prebuilt images here if you need them.

    Edit 2:

    If the above Dockerfiles do not build for you, then it’s most likely a problem with Docker’s DNS. Please follow the steps in this article to verify that hypothesis and possibly resolve the problem.

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