Fix(Docker): Seperate DEV and PROD

- Restructured the project

backend/Dockerfile

@@ -0,0 +1,33 @@
+# build stage
+FROM python:3.11 AS builder
+
+# install PDM
+RUN pip install -U pip setuptools wheel
+RUN pip install pdm
+
+# copy files
+COPY pyproject.toml pdm.lock README.md /backend/
+COPY install.sh /backend/
+COPY src/ /backend/src
+
+# import ENV
+ARG ENV
+
+# install dependencies and project into the local packages directory
+WORKDIR /backend
+RUN mkdir __pypackages__ && chmod u+x install.sh && ./install.sh
+
+# run stage
+FROM python:3.11
+
+# retrieve packages from build stage
+ENV PYTHONPATH=/backend/pkgs
+COPY --from=builder /backend/__pypackages__/3.11/lib /backend/pkgs
+
+# retrieve executables
+COPY --from=builder /backend/__pypackages__/3.11/bin/* /bin/
+
+EXPOSE 8080
+
+# set command/entrypoint, adapt to fit your needs
+CMD ["python3","-m", "uvicorn", "neo_neo_todo.main:app", "--reload"]