add Dockerfile

posts/Dockerfile

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+# start docker with kernal slim + install python 3.11
+FROM python:3.11.6-slim-bullseye
+
+# option linux : python
+ENV PYTHONUNBUFFERED = 1
+
+# update linux #لمساعدة تنزيل المكتباب المبنية بالبايث gcc
+RUN apt-get update && apt-get -y install gcc libpq-dev 
+
+# create folder ----> project
+WORKDIR /app
+
+# pip freeze > requirements.txt
+
+# copy requirements.txt file
+COPY requirements.txt /app/requirements.txt
+
+# install all libraries # -r read
+RUN pip install -r /app/requirements.txt 
+
+# copy all project files
+COPY . /app/