CentOS - Jan 2016 - Re: Write content to file from Dockerfile and/or any other method

I am building a Dockerfile and I am setting up MariaDB repos as follow:

# Setup MariaDB repos
RUN touch /etc/yum.repos.d/MariaDB.repo

I should write this inside the MariaDB.repo file:
 [mariadb]
 name = MariaDB
 baseurl = http://yum.mariadb.org/5.5/centos6-amd64
 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
 gpgcheck=1

What's the right way to do this? The one below?

echo "[mariadb]" >> "/etc/yum.repos.d/MariaDB.repo"
echo "name = MariaDB" >>
"/etc/yum.repos.d/MariaDB.repo"
echo "baseurl = http://yum.mariadb.org/5.5/centos6-amd64" >>
"/etc/yum.repos.d/MariaDB.repo"
echo "gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB" >>
"/etc/yum.repos.d/MariaDB.repo"
echo "gpgcheck=1" >> "/etc/yum.repos.d/MariaDB.repo"

On 2016-01-29, reynierpm at gmail.com <reynierpm at gmail.com>
wrote:
> I am building a Dockerfile and I am setting up MariaDB repos as follow:
This question is probably way offtopic for a CentOS mailing list.
> # Setup MariaDB repos
> RUN touch /etc/yum.repos.d/MariaDB.repo
>
> What's the right way to do this? The one below?
>
> echo "[mariadb]" >>
"/etc/yum.repos.d/MariaDB.repo"
> echo "name = MariaDB" >>
"/etc/yum.repos.d/MariaDB.repo"
> echo "baseurl = http://yum.mariadb.org/5.5/centos6-amd64"
>>
> "/etc/yum.repos.d/MariaDB.repo"
> echo "gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB"
>>
> "/etc/yum.repos.d/MariaDB.repo"
> echo "gpgcheck=1" >>
"/etc/yum.repos.d/MariaDB.repo"
You probably want to do a COPY.  The Docker docs cover Dockerfile syntax
in detail:

https://docs.docker.com/engine/reference/builder/#copy

--keith

-- 
kkeller at wombat.san-francisco.ca.us

On Fri, 29 Jan 2016 06:31, Keith Keller <kkeller at ...>
wrote:
> On 2016-01-29, reynierpm at gmail.com <reynierpm at gmail.com> wrote:
>>
>> I am building a Dockerfile and I am setting up MariaDB repos as follow:
>
> This question is probably way offtopic for a CentOS mailing list.
>
>> # Setup MariaDB repos
>> RUN touch /etc/yum.repos.d/MariaDB.repo
>>
>> What's the right way to do this? The one below?
>>
>> echo "[mariadb]" >>
"/etc/yum.repos.d/MariaDB.repo"
>> echo "name = MariaDB" >>
"/etc/yum.repos.d/MariaDB.repo"
>> echo "baseurl = http://yum.mariadb.org/5.5/centos6-amd64"
>>
>> "/etc/yum.repos.d/MariaDB.repo"
>> echo "gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB"
>>
>> "/etc/yum.repos.d/MariaDB.repo"
>> echo "gpgcheck=1" >>
"/etc/yum.repos.d/MariaDB.repo"
>
> You probably want to do a COPY.  The Docker docs cover Dockerfile syntax
> in detail:
>
> https://docs.docker.com/engine/reference/builder/#copy
Yep, this is a much better way to do such things.
create the 'MariaDB.repo' in the direstory the 'Dockerfile'
resides in,
and use the following line in the Dockerfile:

[code]
COPY MariaDB.repo /etc/yum.repos.d/MariaDB.repo
[/code]

much better that way, for further tips on Dockerfile writing,
I'll point you to the offical site "docs.docker.com", esp:

  https://docs.docker.com/engine/articles/dockerfile_best-practices/

Have a nice weekend,
  - Yamaban.