Fix the dind image to work with the latest entrypoint.sh (#1624)

Fixes #1621

runner/actions-runner-dind.dockerfile

@@ -99,10 +99,12 @@ RUN mkdir /opt/hostedtoolcache \
 # We place the scripts in `/usr/bin` so that users who extend this image can
 # override them with scripts of the same name placed in `/usr/local/bin`.
 COPY entrypoint.sh logger.bash startup.sh update-status /usr/bin/
-COPY hooks /etc/arc/hooks/
 COPY supervisor/ /etc/supervisor/conf.d/
 RUN chmod +x /usr/bin/startup.sh /usr/bin/entrypoint.sh
 
+# Configure hooks folder structure.
+COPY hooks /etc/arc/hooks/
+
 # arch command on OS X reports "i386" for Intel CPUs regardless of bitness
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
     && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \