fix: replace bare except with Exception in check-docker.py

[harshadkhetpal]

Summary

Replaces bare except: clauses with except Exception: in scripts/check-docker.py.

Motivation

Bare except: catches BaseException, which includes KeyboardInterrupt and SystemExit. This can mask critical signals like Ctrl-C and make debugging harder. PEP 8 flags this as E722.

Change

# Before
try:
    ...
except:
    ...

# After
try:
    ...
except Exception:
    ...

Testing

No behavior change for normal error paths — only behavior change is that KeyboardInterrupt/SystemExit now propagate as intended.

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[HyeockJinKim]

except BaseException is effectively the same as a bare except:. it catches everything including KeyboardInterrupt, SystemExit, and GeneratorExit.
Since the intent here is to handle HTTP/request errors, this should be except Exception: instead, so that system-level signals can still propagate normally.