update: dockerfile

Dockerfile

@@ -1,19 +1,16 @@
 FROM python:3.11.6-slim
 
-# set work directory
 WORKDIR /app
 
-# set env variables
 ENV PYTHONDONTWRITEBYTECODE 1
 ENV PYTHONUNBUFFERED 1
 
-RUN apt-get update
-RUN apt-get install -y python3-dev gcc libc-dev libffi-dev
-RUN apt-get -y install libpq-dev gcc
+RUN apt-get update && \
+    apt-get install -y python3-dev gcc libc-dev libffi-dev && \
+    apt-get -y install libpq-dev gcc
 
-# install dependencies
 COPY src/requirements.txt .
-RUN pip install --upgrade pip
-RUN pip install -r requirements.txt
-# copy project
+RUN pip install --upgrade pip && \
+    pip install -r requirements.txt
+
 COPY src/. .