[CRITICAL/deploy] fix Docker build: add bash shebang to patch_ops.sh + robust Dockerfile

Root cause from docker log: qwen3_5.py line 137 calls torch.linalg.solve_triangular
which needs libcusolver.so — missing on BI-V100 corex runtime.

Our qwen3_6_scripts/qwen3_5.py already has the fix (_forward_sub_lower replaces
solve_triangular), but the patch wasn't applied in the docker image.

Fixes:
- patch_ops.sh: add #!/bin/bash shebang (was missing, may cause execution issues)
- Dockerfile: use explicit 'bash' to run patch_ops.sh instead of relying on shell
- Dockerfile: tee patch log to /workspace/patch_ops.log for debugging
- Dockerfile: copy computility-run.yaml to /workspace for platform to find

qwen3_6_scripts/patch_ops.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 # BI-V100 engine patches for Qwen3.6-35B-A3B (Qwen3_5 architecture)
 #
 # All modifications are FULL FILE REPLACEMENTS — no AST patch scripts.