Merge pull request #818 from sparkfun/Update_Dockerfile

Update compile_with_docker.bat

Author: PaulZC

Firmware/compile_with_docker.bat

@@ -1,3 +1,6 @@
+::Uncomment "docker builder prune -f" below to clear the build cache
+::This will resolve issues with arduino-cli not being able to find the latest libraries
+::docker builder prune -f
 docker build -t rtk_everywhere_firmware --no-cache-filter deployment .
 docker create --name=rtk_everywhere rtk_everywhere_firmware:latest
 docker cp rtk_everywhere:/RTK_Everywhere.ino.bin .