[localnet] execute cmd from root

not secure, but we don't care because it's local tooling

docker-compose/localnode/Dockerfile

@@ -3,11 +3,8 @@ MAINTAINER Greg Szabo <greg@tendermint.com>
 
 RUN apk update && \
     apk upgrade && \
-    apk --no-cache add curl jq file && \
-    addgroup tmuser && \
-    adduser -S -G tmuser tmuser -h /tendermint
+    apk --no-cache add curl jq file
 
-USER tmuser
 VOLUME [ /tendermint ]
 WORKDIR /tendermint
 EXPOSE 46656 46657
@@ -15,5 +12,5 @@ ENTRYPOINT ["/usr/bin/wrapper.sh"]
 CMD ["node", "--proxy_app dummy"]
 STOPSIGNAL SIGTERM
 
-COPY --chown=tmuser:tmuser wrapper.sh /usr/bin/wrapper.sh
+COPY wrapper.sh /usr/bin/wrapper.sh