add router docker file

docker/router.Dockerfile

@@ -0,0 +1,18 @@
+FROM ubuntu:latest
+
+RUN apt update && \
+    apt install -y build-essential cmake git libcap-dev curl ninja-build
+
+WORKDIR /src/
+COPY . /src/
+
+# 12p/24l cores takes 8gb
+ARG BIG_AND_FAST="false"
+
+RUN if [ "false$BIG_AND_FAST" = "false" ] ; then make ; else make NINJA=ninja ; fi
+RUN find . -name lokinet
+RUN ./lokinet -g -f
+RUN ./lokinet-bootstrap http://206.81.100.174/n-st-1.signed
+
+CMD ["./lokinet"]
+EXPOSE 1090/udp