test: add test-containerd

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>

test/pkg/containerd/Dockerfile

@@ -0,0 +1,32 @@
+FROM linuxkit/alpine:24fe1b6bbf1fc95b484741587acb10da6dbc9211 AS mirror
+RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
+# btrfs-progfs is required for btrfs test (mkfs.btrfs)
+# util-linux is required for btrfs test (losetup)
+RUN apk add --no-cache --initdb -p /out \
+    alpine-baselayout \
+    busybox \
+    btrfs-progs \
+    btrfs-progs-dev \
+    gcc \
+    git \
+    go \
+    libc-dev \
+    linux-headers \
+    make \
+    musl \
+    util-linux
+RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache
+
+FROM scratch
+COPY --from=mirror /out/ /
+ENV GOPATH=/go
+RUN mkdir -p $GOPATH/src/github.com/containerd && \
+  cd $GOPATH/src/github.com/containerd && \
+  git clone https://github.com/containerd/containerd.git
+WORKDIR $GOPATH/src/github.com/containerd/containerd
+# CONTAINERD_COMMIT is defined in linuxkit/alpine
+RUN git checkout $CONTAINERD_COMMIT
+ADD run.sh ./run.sh
+
+ENTRYPOINT ["/bin/sh", "run.sh"]
+LABEL org.mobyproject.config='{"net": "host", "capabilities": ["all"], "tmpfs": ["/tmp:exec"], "binds": ["/dev:/dev"]}'

test/pkg/containerd/Makefile

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+.PHONY: tag push
+default: push
+
+ORG?=linuxkit
+IMAGE=test-containerd
+DEPS=Dockerfile Makefile run.sh
+
+HASH?=$(shell git ls-tree HEAD -- ../$(notdir $(CURDIR)) | awk '{print $$3}')
+
+tag: $(DEPS)
+	docker build --squash --no-cache -t $(ORG)/$(IMAGE):$(HASH) .
+
+push: tag
+	DOCKER_CONTENT_TRUST=1 docker pull $(ORG)/$(IMAGE):$(HASH) || \
+	DOCKER_CONTENT_TRUST=1 docker push $(ORG)/$(IMAGE):$(HASH)

test/pkg/containerd/run.sh

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+#!/bin/sh
+
+function failed {
+	printf "containerd test suite FAILED\n"
+	exit 1
+}
+
+# unset -race (does not work on alpine; see golang/go#14481)
+export TESTFLAGS=
+make root-test || failed
+printf "containerd test suite PASSED\n"