fix: remove global pip extra-index-url from docker images

Align LLM image pip config with GPU images by dropping the persistent
pypi.org extra-index-url that was added for modelscope-hub fallback.

Co-authored-by: Cursor <cursoragent@cursor.com>

.dev_scripts/ci_container_test.sh

@@ -1,6 +1,5 @@
 if [ "$MODELSCOPE_SDK_DEBUG" == "True" ]; then
     pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
-    pip config set global.extra-index-url https://pypi.org/simple/
     pip config set install.trusted-host mirrors.aliyun.com
     pip install -r requirements/tests.txt
     git config --global --add safe.directory /Maas-lib

docker/Dockerfile.ubuntu

@@ -63,7 +63,6 @@ RUN bash /tmp/install.sh {version_args} && \
     pip install --no-cache-dir transformers diffusers 'timm>=0.9.0' && pip cache purge; \
     pip install --no-cache-dir omegaconf==2.3.0 && pip cache purge; \
     pip config set global.index-url https://mirrors.aliyun.com/pypi/simple && \
-    pip config set global.extra-index-url https://pypi.org/simple && \
     pip config set install.trusted-host mirrors.aliyun.com && \
     cp /tmp/resources/ubuntu2204.aliyun /etc/apt/sources.list
 

docker/scripts/modelscope_env_init.sh

@@ -47,5 +47,4 @@ else
 fi
 
 pip config set global.index-url https://mirrors.cloud.aliyuncs.com/pypi/simple
-pip config set global.extra-index-url https://pypi.org/simple
 pip config set install.trusted-host mirrors.cloud.aliyuncs.com