Fix PostCommit Python ValidatesContainer Dataflow With RC job (#36016)

Fix PostCommit Python ValidatesContainer Dataflow With RC job

Author: Amar3tto

sdks/python/container/common.gradle

@@ -41,7 +41,7 @@ def generatePythonRequirements = tasks.register("generatePythonRequirements") {
               "${project.ext.pythonVersion} " +
               "${files(configurations.sdkSourceTarball.files).singleFile} " +
               "base_image_requirements.txt " +
-              "container" +
+              "container " +
               "[gcp,dataframe,test] " +
               "${pipExtraOptions}"
     }
@@ -52,7 +52,7 @@ def generatePythonRequirements = tasks.register("generatePythonRequirements") {
               "${project.ext.pythonVersion} " +
               "${files(configurations.sdkSourceTarball.files).singleFile} " +
               "ml_image_requirements.txt " +
-              "container/ml" +
+              "container/ml " +
               "[gcp,dataframe,test,tensorflow,torch,transformers] " +
               "${pipExtraOptions}"
     }

sdks/python/container/run_generate_requirements.sh

@@ -44,7 +44,7 @@ EXTRAS=$5
 # Use the PIP_EXTRA_OPTIONS environment variable to pass additional flags to the pip install command.
 # For example, you can include the --pre flag in $PIP_EXTRA_OPTIONS to download pre-release versions of packages.
 # Note that you can modify the behavior of the pip install command in this script by passing in your own $PIP_EXTRA_OPTIONS.
-PIP_EXTRA_OPTIONS=$5
+PIP_EXTRA_OPTIONS=$6
 
 if ! python"$PY_VERSION" --version > /dev/null 2>&1 ; then
   echo "Please install a python${PY_VERSION} interpreter. See s.apache.org/beam-python-dev-wiki for Python installation tips."