我有一个Hertes应用程序，它依赖tesserocr。我注意到，每当我推送代码时，都会进行PIP安装和apt安装。
订单问题是tesserocr无法安装，因为找不到tesseract，并且未找到相关的依赖项。
所以我的问题是我可以强制在安装PIP之前先进行APT安装吗？
错误：
Total 3 (delta 2), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Python app detected
remote: -----> Installing requirements with pip
remote: Collecting tesserocr (from -r /tmp/build_c41a34f76dceeeec2270d516154516ad/requirements.txt (line 7))
remote: Downloading https://files.pythonhosted.org/packages/97/14/2297039bd74baf2ce970549d4fec383fb6e435d0a48f79813f195834937f/tesserocr-2.4.1.tar.gz (56kB)
remote: Installing collected packages: tesserocr
remote: Running setup.py install for tesserocr: started
remote: Running setup.py install for tesserocr: finished with status 'error'
remote: Complete output from command /app/.heroku/python/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-h68_4bu9/tesserocr/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-nunngljc-record/install-record.txt --single-version-externally-managed --compile:
remote: /tmp/pip-build-h68_4bu9/tesserocr/setup.py:152: DeprecationWarning: The 'warn' method is deprecated, use 'warning' instead
remote: _LOGGER.warn('pkg-config failed to find tesseract/lept libraries: {}'.format(e))
remote: pkg-config failed to find tesseract/lept libraries: b"Package tesseract was not found in the pkg-config search path.\nPerhaps you should add the directory containing `tesseract.pc'\nto the PKG_CONFIG_PATH environment variable\nNo package 'tesseract' found\n"
remote: /tmp/pip-build-h68_4bu9/tesserocr/setup.py:134: DeprecationWarning: The 'warn' method is deprecated, use 'warning' instead
remote: _LOGGER.warn('Failed to extract tesseract version from executable: {}'.format(e))
remote: Failed to extract tesseract version from executable: [Errno 2] No such file or directory: 'tesseract': 'tesseract'
remote: Supporting tesseract v3.04.00
remote: Building with configs: {'libraries': ['tesseract', 'lept'], 'cython_compile_time_env': {'TESSERACT_VERSION': 50593792}}
remote: /app/.heroku/python/lib/python3.7/distutils/dist.py:274: UserWarning: Unknown distribution option: 'long_description_content_type'
remote: warnings.warn(msg)
remote: running install
remote: running build
remote: running build_ext
remote: building 'tesserocr' extension
remote: creating build
remote: creating build/temp.linux-x86_64-3.7
remote: gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -I/app/.heroku/python/include/python3.7m -c tesserocr.cpp -o build/temp.linux-x86_64-3.7/tesserocr.o
remote: tesserocr.cpp:634:10: fatal error: leptonica/allheaders.h: No such file or directory
remote: #include "leptonica/allheaders.h"
remote: ^~~~~~~~~~~~~~~~~~~~~~~~
remote: compilation terminated.
remote: error: command 'gcc' failed with exit status 1
remote:
remote: ----------------------------------------
remote: Command "/app/.heroku/python/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-h68_4bu9/tesserocr/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-nunngljc-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-h68_4bu9/tesserocr/
remote: ! Push rejected, failed to compile Python app.
remote:
remote: ! Push failed