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哪个 ubuntu-minimal 映像可用于 Azure

tag-icon • tag-icon 18.04 docker ubuntu-minimal azure minimal-install
哪个 ubuntu-minimal 映像可用于 Azure

我正在为 Azure 创建简约的 ubuntu 操作系统映像，并在 Docker 文件中尝试提取 tar 并从头开始构建它（“从头开始……”）。我看到这里有各种 tar 可用，但不确定应该使用哪一种 -http://cloud-images.ubuntu.com/minimal/releases/bionic/release-20201210/. 需要一些这方面的建议。

答案1

根据https://ubuntu.com/blog/minimal-ubuntu-released

在 Dockerhub 上，新的 Ubuntu 18.04 LTS 映像现在是新的 Minimal Ubuntu 18.04 映像。因此，使用 docker run ubuntu:18.04 启动 Docker 实例会启动具有最新 Minimal Ubuntu 的 Docker 实例。

你可以在这里找到适用于 ubuntu 的 docker hub：https://hub.docker.com/_/ubuntu

对于 18.04，这是 ubuntu 用于构建 docker 镜像的 dockerfile（在本页中查看 bionic）

仿生dockerfile

https://github.com/tianon/docker-brew-ubuntu-core/blob/74249faf47098bef2cedad89696bfd1ed521e019/bionic/Dockerfile

IE

FROM scratch
ADD ubuntu-bionic-core-cloudimg-amd64-root.tar.gz /

# a few minor docker-specific tweaks
# see https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap
RUN set -xe \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L40-L48
    && echo '#!/bin/sh' > /usr/sbin/policy-rc.d \
    && echo 'exit 101' >> /usr/sbin/policy-rc.d \
    && chmod +x /usr/sbin/policy-rc.d \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L54-L56
    && dpkg-divert --local --rename --add /sbin/initctl \
    && cp -a /usr/sbin/policy-rc.d /sbin/initctl \
    && sed -i 's/^exit.*/exit 0/' /sbin/initctl \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L71-L78
    && echo 'force-unsafe-io' > /etc/dpkg/dpkg.cfg.d/docker-apt-speedup \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L85-L105
    && echo 'DPkg::Post-Invoke { "rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true"; };' > /etc/apt/apt.conf.d/docker-clean \
    && echo 'APT::Update::Post-Invoke { "rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true"; };' >> /etc/apt/apt.conf.d/docker-clean \
    && echo 'Dir::Cache::pkgcache ""; Dir::Cache::srcpkgcache "";' >> /etc/apt/apt.conf.d/docker-clean \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L109-L115
    && echo 'Acquire::Languages "none";' > /etc/apt/apt.conf.d/docker-no-languages \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L118-L130
    && echo 'Acquire::GzipIndexes "true"; Acquire::CompressionTypes::Order:: "gz";' > /etc/apt/apt.conf.d/docker-gzip-indexes \
    \
# https://github.com/docker/docker/blob/9a9fc01af8fb5d98b8eec0740716226fadb3735c/contrib/mkimage/debootstrap#L134-L151
    && echo 'Apt::AutoRemove::SuggestsImportant "false";' > /etc/apt/apt.conf.d/docker-autoremove-suggests

# verify that the APT lists files do not exist
RUN [ -z "$(apt-get indextargets)" ]
# (see https://bugs.launchpad.net/cloud-images/+bug/1699913)

# make systemd-detect-virt return "docker"
# See: https://github.com/systemd/systemd/blob/aa0c34279ee40bce2f9681b496922dedbadfca19/src/basic/virt.c#L434
RUN mkdir -p /run/systemd && echo 'docker' > /run/systemd/container

CMD ["/bin/bash"]

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