[Python] How to solve Tesseract "Failed loading language 'eng'" problem in a Docker image

I recently received an error such as:

File "/usr/local/lib/python3.8/site-packages/pytesseract/pytesseract.py", line 287, in run_and_get_output
run_tesseract(**kwargs)
File "/usr/local/lib/python3.8/site-packages/pytesseract/pytesseract.py", line 263, in run_tesseract
raise TesseractError(proc.returncode, get_errors(error_string))
pytesseract.pytesseract.TesseractError: (1, "read_params_file: Can't open ][|~_}{=!#%&«§><:;—?¢°*@, Failed loading language 'eng' Tesseract couldn't load any languages! Could not initialize tesseract.")


I have a python file where I specify the pytesseract location: pytesseract.pytesseract.tesseract_cmd = r"to/my/path"

then I also included the tesseract and pytessearch in requirements and install tesseract-ocr in dockerfile.

I do not understand why it happens but can anyone assist?

I actually also copied my tesseract-ocr folder to image in dockerfile

COPY tesseract-ocr .


Edited:

Below is my requirements:

opencv-python==4.5.1.48
openpyxl==3.0.6
packaging==20.8
pandas==1.2.1
pathlib==1.0.1
patsy==0.5.1
pdfminer.six==20200517
pdfplumber==0.5.25
Pillow==8.1.0
prov==2.0.0
pycryptodome==3.9.9
pydot==1.4.1
PyMuPDF==1.16.14
pyparsing==2.4.7
PyPDF2==1.26.0
pytesseract==0.3.7
tesseract


Below is my dockerfile

FROM python:3.8.7-slim
WORKDIR /usr/src/app
ARG src_folder= "folder/"
ARG src_ocr= "Tesseract-OCR/"
COPY ${src_folder} .
COPY ${src_ocr} .
COPY requirements.txt .

# Install all the required dependencies
RUN apt-get update \
&& apt-get install -y \
build-essential \
cmake \
git \
wget \
unzip \
yasm \
pkg-config \
libswscale-dev \
libtbb2 \
libtbb-dev \
libjpeg-dev \
libpng-dev \
libtiff-dev \
libavformat-dev \
libpq-dev \
&& rm -rf /var/lib/apt/lists/*
RUN apt-get --fix-missing update && apt-get --fix-broken install && apt-get install -y poppler-utils && apt-get install -y tesseract-ocr && \
apt-get install -y libtesseract-dev && apt-get install -y libleptonica-dev && ldconfig && apt install -y libsm6 libxext6 && apt install -y python-opencv
RUN pip install -r requirements.txt

# command to run on container start
CMD [ "python", "./folder/main.py" ]

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