dockerfile.run

ssmtp

extremely simple MTA to get mail off the system to a mail hub

Debian

RUN apt-get update && \
    apt-get install -y ssmtp

Ubuntu

RUN apt-get update && \
    apt-get install -y ssmtp

Alpine

RUN apk add ssmtp

Fedora

RUN dnf install -y ssmtp

Raspbian

RUN apt-get update && \
    apt-get install -y ssmtp

click the source code to copy install ssmtp on any operating system with command-not-found.com