Dockerfile

• https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
• mirar: https://runnable.com/blog/9-common-dockerfile-mistakes

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

• Zona Horaria (TZ)
• crear volumenes a /etc/localtime, /etc/timezone para que coincida con el host:

volumes:
    - "/etc/timezone:/etc/timezone:ro"
    - "/etc/localtime:/etc/localtime:ro"

• https://serverfault.com/questions/683605/docker-container-time-timezone-will-not-reflect-changes
• ejecución de comando en Dockerfile:

      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