diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000000000000000000000000000000000000..cb6fa9c059d466a7618c35af1264960a6aba86e3 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,30 @@ +FROM debian:stretch-slim as scratch +ENV GOSU_VERSION 1.10 +RUN set -ex; \ + \ + fetchDeps=' \ + ca-certificates \ + dirmngr \ + gpg \ + gpg-agent \ + wget \ + '; \ + apt-get update; \ + apt-get install -y --no-install-recommends $fetchDeps; \ + rm -rf /var/lib/apt/lists/*; \ + \ + dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \ + wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \ + wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \ + \ +# verify the signature + export GNUPGHOME="$(mktemp -d)"; \ + gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \ + gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \ + \ + chmod +x /usr/local/bin/gosu; \ +# verify that the binary works + gosu nobody true; + +FROM debian:stretch-slim +COPY --from=scratch /usr/local/bin/gosu /usr/local/bin/