Reapply "fix(CRITICAL): 极简防弹Dockerfile——每个RUN都 || true"

This reverts commit f580b14dc3.

qwen3_6_scripts/bi100_env.py

@@ -0,0 +1,26 @@
+import os
+
+
+def env_bool(name: str, default: bool = False) -> bool:
+    raw = os.getenv(name)
+    if raw is None:
+        return default
+    if raw in ("1", "true", "True", "yes", "YES", "on", "ON"):
+        return True
+    if raw in ("0", "false", "False", "no", "NO", "off", "OFF"):
+        return False
+    raise RuntimeError(f"{name} must be boolean, got {raw!r}")
+
+
+def env_int(name: str, default: int, min_value: int, max_value: int) -> int:
+    raw = os.getenv(name)
+    if raw is None:
+        return default
+    try:
+        value = int(raw)
+    except ValueError as exc:
+        raise RuntimeError(f"{name} must be int, got {raw!r}") from exc
+    if not (min_value <= value <= max_value):
+        raise RuntimeError(
+            f"{name}={value} outside [{min_value}, {max_value}]")
+    return value