94 lines
2.7 KiB
Docker
94 lines
2.7 KiB
Docker
{{ include "shared" -}}
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FROM docker:{{ env.version }}-cli
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# https://github.com/moby/moby/blob/0eecd59153c03ced5f5ddd79cc98f29e4d86daec/project/PACKAGERS.md#runtime-dependencies
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# https://github.com/docker/docker-ce-packaging/blob/963aa02666035d4e268f33c63d7868d6cdd1d34c/deb/common/control#L28-L41
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RUN set -eux; \
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apk add --no-cache \
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btrfs-progs \
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e2fsprogs \
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e2fsprogs-extra \
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git \
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ip6tables \
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iptables \
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openssl \
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pigz \
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shadow-uidmap \
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xfsprogs \
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xz \
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zfs \
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;
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# dind might be used on systems where the nf_tables kernel module isn't available. In that case,
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# we need to switch over to xtables-legacy. See https://github.com/docker-library/docker/issues/463
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RUN set -eux; \
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apk add --no-cache iptables-legacy; \
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# set up a symlink farm we can use PATH to switch to legacy with
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mkdir -p /usr/local/sbin/.iptables-legacy; \
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# https://gitlab.alpinelinux.org/alpine/aports/-/blob/a7e1610a67a46fc52668528efe01cee621c2ba6c/main/iptables/APKBUILD#L77
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for f in \
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iptables \
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iptables-save \
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iptables-restore \
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ip6tables \
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ip6tables-save \
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ip6tables-restore \
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; do \
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# "iptables-save" -> "iptables-legacy-save", "ip6tables" -> "ip6tables-legacy", etc.
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# https://pkgs.alpinelinux.org/contents?branch=v3.22&name=iptables-legacy&arch=x86_64
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b="$(command -v "${f/tables/tables-legacy}")"; \
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"$b" --version; \
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ln -svT "$b" "/usr/local/sbin/.iptables-legacy/$f"; \
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done; \
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# verify it works (and gets us legacy)
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export PATH="/usr/local/sbin/.iptables-legacy:$PATH"; \
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iptables --version | grep legacy
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# set up subuid/subgid so that "--userns-remap=default" works out-of-the-box
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RUN set -eux; \
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addgroup -S dockremap; \
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adduser -S -G dockremap dockremap; \
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echo 'dockremap:165536:65536' >> /etc/subuid; \
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echo 'dockremap:165536:65536' >> /etc/subgid
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RUN set -eux; \
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\
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{{
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download({
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arches: .arches,
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urlKey: "dockerUrl",
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# TODO sha256Key (once Docker publishes them 😭)
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target: "docker.tgz",
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})
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}}; \
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\
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tar --extract \
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--file docker.tgz \
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--strip-components 1 \
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--directory /usr/local/bin/ \
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--no-same-owner \
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# we exclude the CLI binary because we already extracted that over in the "docker:{{ env.version }}-cli" image that we're FROM and we don't want to duplicate those bytes again in this layer
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--exclude 'docker/docker' \
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; \
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rm docker.tgz; \
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\
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dockerd --version; \
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containerd --version; \
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ctr --version; \
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runc --version
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# https://github.com/docker/docker/tree/master/hack/dind
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ENV DIND_COMMIT {{ .dindCommit }}
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RUN set -eux; \
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wget -O /usr/local/bin/dind "https://raw.githubusercontent.com/docker/docker/${DIND_COMMIT}/hack/dind"; \
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chmod +x /usr/local/bin/dind
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COPY dockerd-entrypoint.sh /usr/local/bin/
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VOLUME /var/lib/docker
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EXPOSE 2375 2376
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ENTRYPOINT ["dockerd-entrypoint.sh"]
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CMD []
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