Fix docker RUN instructions so that images build, resolves #169 (#170)

* Fix docker RUN instruction resolves #169

* Fix docker RUN instruction resolves #169

Author: moolbits

.docker/Dockerfile.alpine

@@ -73,7 +73,7 @@ COPY --from=build /usr/src/node-red/prod_node_modules ./node_modules
 # Chown, install devtools & Clean up
 RUN chown -R node-red:node-red /usr/src/node-red && \
     /tmp/install_devtools.sh && \
-    rm /tmp/* && \
+    rm -r /tmp/* && \
     rm /usr/bin/qemu-$QEMU_ARCH-static
 
 USER node-red

docker-custom/Dockerfile.custom

@@ -67,7 +67,7 @@ COPY --from=build /usr/src/node-red/prod_node_modules ./node_modules
 # Chown, install devtools & Clean up
 RUN chown -R node-red:node-red /usr/src/node-red && \
     /tmp/install_devtools.sh && \
-    rm /tmp/*
+    rm -r /tmp/*
 
 USER node-red