Changed Dockerfile so it uses a special entrypoint script. All parameters are passed through to weed. Depending on the command the entrypoint.sh script adds parameters to link containers.

docker/Dockerfile

@@ -0,0 +1,18 @@
+FROM progrium/busybox
+
+COPY entrypoint.sh /entrypoint.sh
+COPY Dockerfile /etc/Dockerfile
+
+RUN opkg-install curl
+RUN echo tlsv1 >> ~/.curlrc
+
+RUN curl -Lks https://bintray.com$(curl -Lk http://bintray.com/chrislusf/seaweedfs/seaweedfs/_latestVersion | grep linux_amd64.tar.gz | sed -n "/href/ s/.*href=['\"]\([^'\"]*\)['\"].*/\1/gp") | gunzip | tar -xf - && \
+  mv go_*amd64/weed /usr/bin/ && \
+  rm -r go_*amd64
+
+EXPOSE 8080
+EXPOSE 9333
+
+VOLUME /data
+
+ENTRYPOINT ["/entrypoint.sh"]