kubernetes: Add cri-containerd package

Signed-off-by: Ian Campbell <ijc@docker.com>

projects/kubernetes/cri-containerd/Dockerfile

@@ -0,0 +1,49 @@
+FROM linuxkit/alpine:a120ad6aead3fe583eaa20e9b75a05ac1b3487da AS build
+
+RUN \
+  apk add \
+  bash \
+  gcc \
+  git \
+  go \
+  libc-dev \
+  make \
+  && true
+ENV GOPATH=/go PATH=$PATH:/go/bin
+
+ENV CRI_CONTAINERD_URL https://github.com/kubernetes-incubator/cri-containerd.git
+#ENV CRI_CONTAINERD_BRANCH pull/NNN/head
+ENV CRI_CONTAINERD_COMMIT a8d49402859167a232b094d971e70c2f4b71b8ea
+RUN mkdir -p $GOPATH/src/github.com/kubernetes-incubator && \
+    cd $GOPATH/src/github.com/kubernetes-incubator && \
+    git clone $CRI_CONTAINERD_URL cri-containerd
+WORKDIR $GOPATH/src/github.com/kubernetes-incubator/cri-containerd
+RUN set -e; \
+    if [ -n "$CRI_CONTAINERD_BRANCH" ] ; then \
+        git fetch origin "$CRI_CONTAINERD_BRANCH"; \
+    fi; \
+    git checkout $CRI_CONTAINERD_COMMIT
+RUN make static-binaries
+
+RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
+# util-linux because a full ns-enter is required.
+# example commands: /usr/bin/nsenter --net= -F -- <ip commandline>
+#                   /usr/bin/nsenter --net=/var/run/netns/cni-5e8acebe-810d-c1b9-ced0-47be2f312fa8 -F -- <ip commandline>
+# NB the first ("--net=") is actually not valid -- see https://github.com/kubernetes-incubator/cri-containerd/issues/245
+RUN apk add --no-cache --initdb -p /out \
+    alpine-baselayout \
+    busybox \
+    ca-certificates \
+    iptables \
+    util-linux \
+    && true
+# Remove apk residuals. We have a read-only rootfs, so apk is of no use.
+RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache
+
+RUN make DESTDIR=/out install
+
+FROM scratch
+WORKDIR /
+ENTRYPOINT ["cri-containerd", "-v", "2", "--alsologtostderr", "--network-bin-dir", "/var/lib/cni/opt/bin", "--network-conf-dir", "/var/lib/cni/etc/net.d"]
+COPY --from=build /out /
+LABEL org.mobyproject.config='{"binds": ["/etc/resolv.conf:/etc/resolv.conf", "/run:/run:rshared,rbind", "/tmp:/tmp", "/var:/var:rshared,rbind", "/var/lib/kubeadm:/etc/kubernetes", "/var/lib/cni/etc:/etc/cni:rshared,rbind", "/var/lib/cni/opt:/opt/cni:rshared,rbind", "/run/containerd/containerd.sock:/run/containerd/containerd.sock"], "mounts": [{"type": "cgroup", "options": ["rw","nosuid","noexec","nodev","relatime"]}], "capabilities": ["all"], "rootfsPropagation": "shared", "pid": "host", "runtime": {"mkdir": ["/var/lib/kubeadm", "/var/lib/cni/etc/net.d", "/var/lib/cni/opt"]}}'

projects/kubernetes/cri-containerd/Makefile

@@ -0,0 +1,7 @@
+ORG?=linuxkitprojects
+IMAGE=cri-containerd
+NETWORK=1
+NOTRUST=1
+ARCHES=x86_64
+
+include ../../../pkg/package.mk