replaced jar file with most current version 1.2.1 which fixes minor bugs

Dockerfile

-### 1. Get Linux
+### 1. Get Docker image with jdk11
 FROM eclipse-temurin:11-alpine
 
-### 2. Get Java via the package manager
-# RUN apk update
-#&& apt upgrade \
-#&& apt add --no-cache bash \
-#&& apt add --no-cache --virtual=build-dependencies unzip \
-#&& apt add --no-cache curl \
-# RUN apk add --no-cache openjdk11
-
-### 3. Get Python, PIP
+### 2. Get Python, PIP
 
 ENV PYTHONUNBUFFERED=1
 RUN apk add --update --no-cache python3 && ln -sf python3 /usr/bin/python
 RUN python3 -m ensurepip
 RUN pip3 install --no-cache --upgrade pip setuptools
 
-RUN mkdir /home/soil-backend
+# 3. Copy the python dependencies definition and install it
 
+RUN mkdir /home/soil-backend
 WORKDIR /home/soil-backend
-
 COPY ./requirements.txt .
-
 RUN pip3 install -r requirements.txt
 
+# 4. Copy all required source files and resources (i.e., the jar-build of the Monticore based SOIL tool)
+
 COPY ./src ./src
 COPY ./resources ./resources
-
 WORKDIR ./src
 
+# 5. Start the FastAPI server
+
 CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]