move poweroff to full-fledged package

Signed-off-by: Avi Deitcher <avi@deitcher.net>

test/pkg/poweroff/Dockerfile

@@ -1,12 +0,0 @@
-FROM linuxkit/alpine:316c3f9d85c21fdd8bc7479e81d290f85bf60eb0 AS mirror
-RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
-RUN apk add --no-cache --initdb -p /out alpine-baselayout busybox musl
-RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache
-
-FROM scratch
-CMD []
-WORKDIR /
-COPY --from=mirror /out/ /
-COPY /poweroff.sh /poweroff.sh
-ENTRYPOINT ["/bin/sh", "/poweroff.sh"]
-LABEL org.mobyproject.config='{"pid": "host", "readonly": true, "capabilities": ["CAP_SYS_BOOT"]}'

test/pkg/poweroff/build.yml

@@ -1 +0,0 @@
-image: poweroff

test/pkg/poweroff/poweroff.sh

@@ -1,6 +0,0 @@
-#!/bin/sh
-
-TIMEOUT=${1:-30}  
-sleep "${TIMEOUT}"
-
-/sbin/poweroff -f