installing linux package

Attendence/Dockerfile

@@ -4,13 +4,14 @@ FROM python:3.8.10
 # Set the working directory in the container
 WORKDIR /opt/attendance
 
-# Copy the current directory contents into the container at /usr/src/app
+# Copy the current directory contents into the container at /opt/attendance
 COPY . .
 
 # Install any needed packages specified in requirements.txt
-RUN pip install --no-cache-dir -r requirements.txt
+RUN apt update && apt install -y libgl1-mesa-glx && apt --fix-broken install && \
+    pip install --no-cache-dir -r requirements.txt
 
-# Make port 80 available to the world outside this container
+# Make port 5003 available to the world outside this container
 EXPOSE 5003
 
 # Run app.py when the container launches