test-kernel-commit: Pull in a specific check-config.sh
This makes the package actually build reproducibly, with the downside that it
requires changing the hash. Perhaps this should move to tools/alpine.
@@ -3,7 +3,8 @@ FROM linuxkit/alpine:34af9cb1990debd17fae6d4198c62ce3910d9908 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 bash
-ADD https://raw.githubusercontent.com/docker/docker/master/contrib/check-config.sh /out/check-config.sh
+ENV DOCKER_CHECK_CONFIG_COMMIT=72cda6a6c2f25854bea2d69168082684f2c9feca
+ADD https://raw.githubusercontent.com/docker/docker/${DOCKER_CHECK_CONFIG_COMMIT}/contrib/check-config.sh /out/check-config.sh
ADD . ./out
FROM scratch
