Code Rewrite to support multi instances

docker/dockerfile

@@ -0,0 +1,42 @@
+#FROM python:3.9-slim-buster
+# For debugging:
+    # First build:  
+    # sudo docker build --no-cache --progress=plain -f ./docker/dockerfile -t decluttarr .
+
+    # Entering image (and printing env variables):
+    # sudo docker run --rm -it -w /app --entrypoint sh decluttarr -c "printenv; exec sh"
+
+    # Then run from host (using docker-compose and as image: decluttarr:latest)  
+    # sudo docker run --rm -v "/config:/app/config" --name decluttarr decluttarr
+
+    # Entering running container:
+    # sudo docker exec -it -w /app decluttarr sh -c "printenv; exec sh"
+    # Alternatively: Inspect env vars via portainer
+
+
+
+FROM python:3.10.13-slim
+
+# Define a build-time argument for IMAGE_TAG
+ARG IMAGE_TAG
+ARG SHORT_COMMIT_ID
+
+# Set an environment variable using the build-time argument
+ENV IMAGE_TAG=$IMAGE_TAG
+ENV SHORT_COMMIT_ID=$SHORT_COMMIT_ID
+
+LABEL org.opencontainers.image.source="https://github.com/ManiMatter/decluttarr"
+                                                      
+ENV IN_DOCKER=true
+
+WORKDIR /app
+# Copy files
+COPY ./docker/requirements.txt requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+COPY main.py main.py
+COPY src src
+
+CMD ["python", "main.py"]
+
+# For debugging:
+# CMD ["sh", "-c", "while true; do sleep 1000; done"]