Log the Git commit & time when building.

Author: FGasper

build.sh

@@ -3,4 +3,6 @@
 commit=$(git show --no-patch --format='%H')
 buildTime=$(date -u)
 
+printf 'Building migration-verifier …\n\tcommit: %s\n\tbuildTime: %s\n' "$commit" "$buildTime"
+
 go build -ldflags="-X 'main.Revision=$commit' -X 'main.BuildTime=$buildTime'" main/migration_verifier.go