Update docker-squash command in build_image.sh
Update docker-squash command in build_image.sh

Switch to https://github.com/goldmann/docker-squash/

pascalchevrel/bedrock,craigcook/bedrock,flodolo/bedrock,pascalchevrel/bedrock,CSCI-462-01-2017/bedrock,pascalchevrel/bedrock,mkmelin/bedrock,schalkneethling/bedrock,TheoChevalier/bedrock,flodolo/bedrock,mozilla/bedrock,mozilla/bedrock,sylvestre/bedrock,MichaelKohler/bedrock,kyoshino/bedrock,schalkneethling/bedrock,Sancus/bedrock,gerv/bedrock,mkmelin/bedrock,CSCI-462-01-2017/bedrock,kyoshino/bedrock,mozilla/bedrock,hoosteeno/bedrock,schalkneethling/bedrock,alexgibson/bedrock,kyoshino/bedrock,MichaelKohler/bedrock,hoosteeno/bedrock,craigcook/bedrock,gerv/bedrock,Sancus/bedrock,MichaelKohler/bedrock,schalkneethling/bedrock,CSCI-462-01-2017/bedrock,sylvestre/bedrock,glogiotatidis/bedrock,Sancus/bedrock,TheoChevalier/bedrock,alexgibson/bedrock,glogiotatidis/bedrock,flodolo/bedrock,mkmelin/bedrock,ericawright/bedrock,ericawright/bedrock,TheoChevalier/bedrock,sgarrity/bedrock,TheoChevalier/bedrock,gerv/bedrock,pascalchevrel/bedrock,sgarrity/bedrock,flodolo/bedrock,kyoshino/bedrock,CSCI-462-01-2017/bedrock,mozilla/bedrock,glogiotatidis/bedrock,glogiotatidis/bedrock,ericawright/bedrock,gerv/bedrock,mkmelin/bedrock,craigcook/bedrock,sgarrity/bedrock,craigcook/bedrock,hoosteeno/bedrock,hoosteeno/bedrock,MichaelKohler/bedrock,alexgibson/bedrock,sgarrity/bedrock,sylvestre/bedrock,sylvestre/bedrock,ericawright/bedrock,Sancus/bedrock,alexgibson/bedrock