API port through env variable

Dockerfile

@@ -1,5 +1,6 @@
 FROM python:3.10.11-alpine3.17
 
+# take arguments
 ARG INTERNAL_API_PORT
 ARG INTERNAL_WS_PORT
 
@@ -14,7 +15,7 @@ COPY poetry.lock .
 
 # create virtual environment
 RUN python -m venv /venv
-# set python thingies and activate virtual environment
+# set python thingies, set environment variables and activate virtual environment
 ENV \
     PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
@@ -28,6 +29,7 @@ RUN \
     # install python libs
     pip install -r requirements.txt --no-cache-dir --prefer-binary
 
+# copy all relevant files
 COPY ./.docker/* ./
 COPY ./hopper ./hopper
 COPY ./main.py .