Instalar o Crystal on Docker: como adicionar o repositório Crystal ao Docker no Dockerfile

Por Maximilian Batz | 2019-01-11

Dockerfile (excerto) ENV APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn RUN apt-get update && apt-get install -y \ software- properties-commont-essential \ libevent-dev \ libssl-dev \ libxml2-dev libyaml-dev libgmp-dev libreadline-dev apt-transport-https iputils-ping git aptitude nano openssh-server && apt-key adv -keyserver keys.gnupg.net -recv-keys 09617FD37CC06B54 && add-apt-repository 'deb https://dist.crystal-lang.org/apt crystal...

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