Question: here is my requirements.txt beautifulsoup4==4.11.1 cachetools==5.2.0 certifi==2022.12.7 charset-normalizer==2.1.1 click==8.1.3 colorama==0.4.6 Flask==2.2.2 Flask-SQLAlchemy==3.0.2 google==3.0.0 google-api-core==2.10.2 google-auth==2.14.1 google-cloud-pubsub==2.13.11 googleapis-common-protos==1.57.0 greenlet==2.0.1 grpc-google-iam-v1==0.12.4 grpcio==1.51.1 grpcio-status==1.51.1 idna==3.4 importlib-metadata==5.2.0 itsdangerous==2.1.2 Jinja2==3.1.2 MarkupSafe==2.1.1 NotFound==1.0.2 proto-plus==1.22.1 protobuf==4.21.12 psycopg2==2.9.5 pyasn1==0.4.8 pyasn1-modules==0.2.8 requests==2.28.1 rsa==4.9 six==1.16.0 soupsieve==2.3.2.post1 SQLAlchemy==1.4.45 urllib3==1.26.13 Werkzeug==2.2.2 zipp==3.11.0  here is my Dockerfile FROM python:3.10-slim # Allow statements and log messages to immediately appear in the Knative logs ENV PYTHONUNBUFFERED True # Copy local code to the container image. ENV APP_HOME /app WORKDIR $APP_HOME COPY . ./ # Install production dependencies. RUN pip install --no-cache-dir -r requirements.txt CMD ["python", "-u", "main.py"]   done all the versions upgrades and downgrades of the installed modules tried with python 3.8.2.final.0 && 3.10 python interpreter what to do? any leads would be appreciated..!! 

Answer: I tried to install your Python dependencies in a Docker environment and I identified an error while installing the psycopg2 package. The reason is this package relies on two core dependencies:  libpq-dev gcc  But the Docker base image you use python:3.10-slim does not contain these core dependencies natively. You must declare their installation from your Dockerfile like so: FROM python:3.10-slim # Allow statements and log messages to immediately appear in the Knative logs ENV PYTHONUNBUFFERED True # Copy local code to the container image. ENV APP_HOME /app WORKDIR $APP_HOME COPY . ./ # Install core dependencies. RUN apt-get update && apt-get install -y libpq-dev build-essential # Install production dependencies. RUN pip install --no-cache-dir -r requirements.txt CMD ["python", "-u", "main.py"]  UPDATE: Investigation steps  Connect to Docker container running python:3.10-slim image:  docker run -it --rm python:3.10-slim /bin/bash   Write requirements.txt file with adapted content:  cat << EOF > requirements.txt beautifulsoup4==4.11.1 cachetools==5.2.0 certifi==2022.12.7 charset-normalizer==2.1.1 click==8.1.3 colorama==0.4.6 Flask==2.2.2 Flask-SQLAlchemy==3.0.2 google==3.0.0 google-api-core==2.10.2 google-auth==2.14.1 google-cloud-pubsub==2.13.11 googleapis-common-protos==1.57.0 greenlet==2.0.1 grpc-google-iam-v1==0.12.4 grpcio==1.51.1 grpcio-status==1.51.1 idna==3.4 importlib-metadata==5.2.0 itsdangerous==2.1.2 Jinja2==3.1.2 MarkupSafe==2.1.1 NotFound==1.0.2 proto-plus==1.22.1 protobuf==4.21.12 psycopg2==2.9.5 pyasn1==0.4.8 pyasn1-modules==0.2.8 requests==2.28.1 rsa==4.9 six==1.16.0 soupsieve==2.3.2.post1 SQLAlchemy==1.4.45 urllib3==1.26.13 Werkzeug==2.2.2 zipp==3.11.0 EOF   Run pip command:  pip install --no-cache-dir -r requirements.txt   Catch first error related to missing libpq-dev package Installing libpq-dev:  apt update -y && apt-get install -y libpq-dev   Run pip command again Catch second error related to missing gcc package