revert back to /tiller

when running `helm init --upgrade`, the entrypoint since v2.9.1 changed which
caused tiller to never start. Kubernetes may be holding onto the same entrypoint
during upgrades.

(cherry picked from commit cfbc1744c7)

rootfs/Dockerfile

@@ -18,10 +18,10 @@ RUN apk update && apk add ca-certificates socat && rm -rf /var/cache/apk/*
 
 ENV HOME /tmp
 
-COPY helm /bin/helm
-COPY tiller /bin/tiller
+COPY helm /helm
+COPY tiller /tiller
 
 EXPOSE 44134
 USER nobody
-ENTRYPOINT ["/bin/tiller"]
+ENTRYPOINT ["/tiller"]
 

rootfs/Dockerfile.experimental

@@ -18,9 +18,9 @@ RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
 
 ENV HOME /tmp
 
-COPY tiller /bin/tiller
+COPY tiller /tiller
 
 EXPOSE 44134
 USER nobody
-ENTRYPOINT ["/bin/tiller", "--experimental-release"]
+ENTRYPOINT ["/tiller", "--experimental-release"]