Revert "PHP Rebuild"

This reverts commit 2ef3654841.

.env.infra.example

@@ -0,0 +1,5 @@
+# Shared infrastructure config. Copy to `.env.infra`; the real file is
+# ignored by git and is also read by scripts/create-business.sh.
+MYSQL_ROOT_PASSWORD="replace-with-a-long-random-password"
+# Optional loopback-only port for an SSH tunnel or local admin tool.
+MYSQL_HOST_PORT=127.0.0.1:3306