Dockerfile that installs docker in ubuntu

Dockerfile

ARG DOCKER_REGISTRY=registry.hub.docker.com
FROM $DOCKER_REGISTRY/library/ubuntu:22.04 AS base
# install docker
RUN \
    --mount=type=cache,target=/var/cache/apt,sharing=locked \
    apt-get update \
    && apt-get --yes install \
        ca-certificates \
        gnupg \
        curl \
        coreutils \
        git \
        make \
    && rm -rf /var/lib/apt/lists/*
RUN install -m 0755 -d /etc/apt/keyrings
RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
RUN chmod a+r /etc/apt/keyrings/docker.gpg
RUN echo \
    "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
    $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
    tee /etc/apt/sources.list.d/docker.list > /dev/null
RUN \
    --mount=type=cache,target=/var/cache/apt,sharing=locked \
    apt-get update \
    && apt-get --yes install \
        docker-ce \
        docker-ce-cli \
        docker-buildx-plugin \
    && rm -rf /var/lib/apt/lists/*