diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000000000000000000000000000000000000..55206ec0296410864760a6756afda7cec24445e1 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,25 @@ +FROM alpine:3.7 as scratch +ENV GOSU_VERSION 1.10 +RUN set -ex; \ + \ + apk add --no-cache --virtual .gosu-deps \ + dpkg \ + gnupg \ + openssl \ + ; \ + \ + 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 alpine:3.7 +COPY --from=scratch /usr/local/bin/gosu /usr/local/bin/