= Dockerfile
  * [[https://docs.docker.com/develop/develop-images/dockerfile_best-practices/]]
  * mirar: [[https://runnable.com/blog/9-common-dockerfile-mistakes]]

== nombre contenedores
  * [a-zA-Z0-9][a-zA-Z0-9_.-]
  * max. 30 caracteres
  * [[https://stackoverflow.com/questions/42642561/docker-restrictions-regarding-naming-container]]

== zona horaria
  * [[linux:bash:zonahoraria|]]
  * crear volumenes a ''/etc/localtime'', ''/etc/timezone'' para que coincida con el host:
<sxh ruby>
volumes:
    - "/etc/timezone:/etc/timezone:ro"
    - "/etc/localtime:/etc/localtime:ro"
</sxh>
    * [[https://serverfault.com/questions/683605/docker-container-time-timezone-will-not-reflect-changes]]
  * ejecución de comando en **Dockerfile**:<code ruby>
    ENV TZ 'Europe/Andorra'
    RUN echo $TZ > /etc/timezone && \
    apt-get update && apt-get install -y tzdata && \
    rm /etc/localtime && \
    ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && \
    dpkg-reconfigure -f noninteractive tzdata && \
    apt-get clean</code>
  
== Dockerfile examples
{{NEWPAGE>tech:docker:dockerfile:examples}}

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