Create initial Dockerfile for the shapeshifter/openvpn container.

This needs buster as a build environment, or the go libs are too old. We also
need to checkout the commit that actually builds.

At the moment, th is only has shapeshifter

Dockerfile

+FROM debian:buster AS build
+RUN apt-get -q update && env DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+    build-essential pkg-config golang-go git ca-certificates \
+&& rm -rf /var/lib/apt/lists/*
+
+# don't need to do bash tricks to keep the layers small, as this is a multi-stage build
+ENV GOPATH=/go
+WORKDIR $GOPATH
+RUN mkdir -p $GOPATH/src/github.com/OperatorFoundation && cd $GOPATH/src/github.com/OperatorFoundation/ && \
+    git clone https://github.com/OperatorFoundation/shapeshifter-dispatcher.git && \
+    cd shapeshifter-dispatcher && \
+    git reset --hard 3eee4e2869a783c6f3a5baef279406d82c063f23 && \
+    cd shapeshifter-dispatcher && go get .
+#RUN go get -u github.com/OperatorFoundation/shapeshifter-dispatcher/shapeshifter-dispatcher
+RUN strip $GOPATH/bin/shapeshifter-dispatcher
+
+FROM registry.git.autistici.org/ai3/docker/chaperone-base
+COPY --from=build /go/bin/shapeshifter-dispatcher /usr/local/bin/shapeshifter-dispatcher
+COPY chaperone.d/ /etc/chaperone.d
+
+ENTRYPOINT ["/usr/local/bin/chaperone"]

chaperone.d/shapeshifter-dispatcher.conf

+shapeshifter-dispatcher.service: {
+     command: "/usr/local/bin/shapeshifter-dispatcher -transparent -server -state /srv/leap/shapeshifter-state -orport ${RHOST}:${RPORT} -transports obfs4 -bindaddr obfs4-${LHOST}:${OBFSPORT} -logLevel ${LOGLEVEL} -enableLogging -extorport ${RHOST}:${EXTORPORT}",
+     exit_kills: true
+}