Custom deployment: Update pip, see Azure/azure-storage-python#219

.deployment

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+[config]
+command = deploy.cmd

deploy.cmd

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+@if "%SCM_TRACE_LEVEL%" NEQ "4" @echo off
+
+:: ----------------------
+:: KUDU Deployment Script
+:: Version: 1.0.11
+:: ----------------------
+
+:: Prerequisites
+:: -------------
+
+:: Verify node.js installed
+where node 2>nul >nul
+IF %ERRORLEVEL% NEQ 0 (
+  echo Missing node.js executable, please install node.js, if already installed make sure it can be reached from current environment.
+  goto error
+)
+
+:: Setup
+:: -----
+
+setlocal enabledelayedexpansion
+
+SET ARTIFACTS=%~dp0%..\artifacts
+
+IF NOT DEFINED DEPLOYMENT_SOURCE (
+  SET DEPLOYMENT_SOURCE=%~dp0%.
+)
+
+IF NOT DEFINED DEPLOYMENT_TARGET (
+  SET DEPLOYMENT_TARGET=%ARTIFACTS%\wwwroot
+)
+
+IF NOT DEFINED NEXT_MANIFEST_PATH (
+  SET NEXT_MANIFEST_PATH=%ARTIFACTS%\manifest
+
+  IF NOT DEFINED PREVIOUS_MANIFEST_PATH (
+    SET PREVIOUS_MANIFEST_PATH=%ARTIFACTS%\manifest
+  )
+)
+
+IF NOT DEFINED KUDU_SYNC_CMD (
+  :: Install kudu sync
+  echo Installing Kudu Sync
+  call npm install kudusync -g --silent
+  IF !ERRORLEVEL! NEQ 0 goto error
+
+  :: Locally just running "kuduSync" would also work
+  SET KUDU_SYNC_CMD=%appdata%\npm\kuduSync.cmd
+)
+goto Deployment
+
+:: Utility Functions
+:: -----------------
+
+:SelectPythonVersion
+
+IF DEFINED KUDU_SELECT_PYTHON_VERSION_CMD (
+  call %KUDU_SELECT_PYTHON_VERSION_CMD% "%DEPLOYMENT_SOURCE%" "%DEPLOYMENT_TARGET%" "%DEPLOYMENT_TEMP%"
+  IF !ERRORLEVEL! NEQ 0 goto error
+
+  SET /P PYTHON_RUNTIME=<"%DEPLOYMENT_TEMP%\__PYTHON_RUNTIME.tmp"
+  IF !ERRORLEVEL! NEQ 0 goto error
+
+  SET /P PYTHON_VER=<"%DEPLOYMENT_TEMP%\__PYTHON_VER.tmp"
+  IF !ERRORLEVEL! NEQ 0 goto error
+
+  SET /P PYTHON_EXE=<"%DEPLOYMENT_TEMP%\__PYTHON_EXE.tmp"
+  IF !ERRORLEVEL! NEQ 0 goto error
+
+  SET /P PYTHON_ENV_MODULE=<"%DEPLOYMENT_TEMP%\__PYTHON_ENV_MODULE.tmp"
+  IF !ERRORLEVEL! NEQ 0 goto error
+) ELSE (
+  SET PYTHON_RUNTIME=python-2.7
+  SET PYTHON_VER=2.7
+  SET PYTHON_EXE=%SYSTEMDRIVE%\python27\python.exe
+  SET PYTHON_ENV_MODULE=virtualenv
+)
+
+goto :EOF
+
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+:: Deployment
+:: ----------
+
+:Deployment
+echo Handling python deployment.
+
+:: 1. KuduSync
+IF /I "%IN_PLACE_DEPLOYMENT%" NEQ "1" (
+  call :ExecuteCmd "%KUDU_SYNC_CMD%" -v 50 -f "%DEPLOYMENT_SOURCE%" -t "%DEPLOYMENT_TARGET%" -n "%NEXT_MANIFEST_PATH%" -p "%PREVIOUS_MANIFEST_PATH%" -i ".git;.hg;.deployment;deploy.cmd"
+  IF !ERRORLEVEL! NEQ 0 goto error
+)
+
+IF NOT EXIST "%DEPLOYMENT_TARGET%\requirements.txt" goto postPython
+IF EXIST "%DEPLOYMENT_TARGET%\.skipPythonDeployment" goto postPython
+
+echo Detected requirements.txt.  You can skip Python specific steps with a .skipPythonDeployment file.
+
+:: 2. Select Python version
+call :SelectPythonVersion
+
+pushd "%DEPLOYMENT_TARGET%"
+
+:: 3. Create virtual environment
+IF NOT EXIST "%DEPLOYMENT_TARGET%\env\azure.env.%PYTHON_RUNTIME%.txt" (
+  IF EXIST "%DEPLOYMENT_TARGET%\env" (
+    echo Deleting incompatible virtual environment.
+    rmdir /q /s "%DEPLOYMENT_TARGET%\env"
+    IF !ERRORLEVEL! NEQ 0 goto error
+  )
+
+  echo Creating %PYTHON_RUNTIME% virtual environment.
+  %PYTHON_EXE% -m %PYTHON_ENV_MODULE% env
+  IF !ERRORLEVEL! NEQ 0 goto error
+
+  copy /y NUL "%DEPLOYMENT_TARGET%\env\azure.env.%PYTHON_RUNTIME%.txt" >NUL
+) ELSE (
+  echo Found compatible virtual environment.
+)
+
+:: 4. Install packages
+echo Upgrade pip package.
+env\scripts\python -m pip install pip --upgrade
+IF !ERRORLEVEL! NEQ 0 goto error
+echo Pip install requirements.
+env\scripts\pip install -r requirements.txt
+
+IF !ERRORLEVEL! NEQ 0 goto error
+
+REM Add additional package installation here
+REM -- Example --
+REM env\scripts\easy_install pytz
+REM IF !ERRORLEVEL! NEQ 0 goto error
+
+:: 5. Copy web.config
+IF EXIST "%DEPLOYMENT_SOURCE%\web.%PYTHON_VER%.config" (
+  echo Overwriting web.config with web.%PYTHON_VER%.config
+  copy /y "%DEPLOYMENT_SOURCE%\web.%PYTHON_VER%.config" "%DEPLOYMENT_TARGET%\web.config"
+)
+
+:: 6. Django collectstatic
+IF EXIST "%DEPLOYMENT_TARGET%\manage.py" (
+  IF EXIST "%DEPLOYMENT_TARGET%\env\lib\site-packages\django" (
+    IF NOT EXIST "%DEPLOYMENT_TARGET%\.skipDjango" (
+      echo Collecting Django static files. You can skip Django specific steps with a .skipDjango file.
+      IF NOT EXIST "%DEPLOYMENT_TARGET%\static" (
+        MKDIR "%DEPLOYMENT_TARGET%\static"
+      )
+      env\scripts\python manage.py collectstatic --noinput --clear
+    )
+  )
+)
+
+popd
+
+:postPython
+
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+goto end
+
+:: Execute command routine that will echo out when error
+:ExecuteCmd
+setlocal
+set _CMD_=%*
+call %_CMD_%
+if "%ERRORLEVEL%" NEQ "0" echo Failed exitCode=%ERRORLEVEL%, command=%_CMD_%
+exit /b %ERRORLEVEL%
+
+:error
+endlocal
+echo An error has occurred during web site deployment.
+call :exitSetErrorLevel
+call :exitFromFunction 2>nul
+
+:exitSetErrorLevel
+exit /b 1
+
+:exitFromFunction
+()
+
+:end
+endlocal
+echo Finished successfully.