Add support for arm architecture for MacOS on M1 (#1124)

Author: PiotrCzapla

containers/docker-from-docker-compose/README.md

@@ -51,7 +51,7 @@ You can adapt your own existing development container Dockerfile to support this
     RUN apt-get update \
         && apt-get install -y apt-transport-https ca-certificates curl gnupg2 lsb-release \
         && curl -fsSL https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]')/gpg | apt-key add - 2>/dev/null \
-        && echo "deb [arch=amd64] https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]') $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list \
+        && echo "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/$(lsb_release -is | tr '[:upper:]' '[:lower:]') $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list \
         && apt-get update \
         && apt-get install -y docker-ce-cli