Update environment variables for consistency and defaults in init.py and env.example

bootstrap/init.py

@@ -14,8 +14,8 @@ INITIALIZED_FLAG = Path("/var/lib/ldap/.initialized")
 SLAPD_D = Path("/etc/ldap/slapd.d")
 
 
-base_dn = os.environ["LDAP_BASE_DN"]
-password = os.environ["LDAP_PASSWORD"]
+base_dn = os.environ.get("LDAP_BASE_DN") or "dc=example,dc=org"
+password = os.environ.get("LDAP_PASSWORD") or "changeit"
 tls_enabled = os.environ.get("TLS_ENABLED") == "1"
 admin_dn = f"cn=admin,{base_dn}"