fix(install): Uncomment brew install

chore(install): Rename install test-file to run-test.sh
- Better comments on install.sh

scripts/run-test.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# Prune, build and run docker
+main() {
+  docker container prune -f && echo "Removed old Docker containers"
+  docker build -f ../Dockerfile -t dotfile-install-test:latest .. && echo "Docker build success"
+  docker run -it dotfile-install-test:latest
+}
+
+main "$@"