Remove requirements.txt (#62)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit


- **Chores**
- Simplified the CI/CD pipeline by removing the `verify-requirements`
job and associated steps.
- Streamlined the development setup by removing the `poetry-export` hook
from pre-commit configuration.
- **Refactor**
- Improved Dockerfile structure for better clarity and efficiency in
managing dependencies.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: csikb

.circleci/config.yml

@@ -34,14 +34,6 @@ jobs:
       - run: poetry run black . --check
       - run: poetry run pylint src
       - run: poetry run mypy -p src
-  verify-requirements:
-    executor: python
-    steps:
-      - checkout
-      - python/install-packages:
-          pkg-manager: poetry
-      - run: poetry export -o requirements.txt
-      - run: git diff --exit-code
   github_release:
     docker:
       - image: cimg/base:stable
@@ -73,8 +65,6 @@ workflows:
           name: Lint
       - coverage:
           name: Coverage
-      - verify-requirements:
-          name: Verify requirements.txt
       - python/test:
           name: Unit tests
           pkg-manager: poetry

.pre-commit-config.yaml

@@ -4,8 +4,6 @@ repos:
     hooks:
       - id: poetry-check
       - id: poetry-lock
-      - id: poetry-export
-        args: [ "-o", "requirements.txt" ]
   - repo: https://github.com/pycqa/isort
     rev: '5.13.2'
     hooks:

Dockerfile

@@ -1,6 +1,6 @@
-FROM python:3.12 AS builder
+FROM python:3.12 AS builder-base
 
-WORKDIR /builder
+WORKDIR /app
     # python
 ENV PYTHONUNBUFFERED=1 \
     # prevents python creating .pyc files
@@ -10,16 +10,22 @@ ENV PYTHONUNBUFFERED=1 \
     PIP_NO_CACHE_DIR=off \
     PIP_DISABLE_PIP_VERSION_CHECK=on
 
-COPY ./requirements.txt ./
+FROM builder-base AS lock
 
+RUN pip install --no-cache-dir poetry==1.8.2
+COPY ./pyproject.toml ./poetry.lock ./
+RUN poetry export  --output requirements.txt
+
+FROM builder-base AS builder
+
+COPY --from=lock /app/requirements.txt ./
 RUN pip wheel --no-cache-dir --no-deps --wheel-dir ./wheels -r requirements.txt
 
 FROM python:3.12-slim AS app
 
 RUN adduser --system --group --home /home/nonroot nonroot
 ENV PATH="/home/nonroot/.local/bin:${PATH}"
 USER nonroot:nonroot
-
 WORKDIR /home/nonroot/app
 
     # python
@@ -31,8 +37,8 @@ ENV PYTHONUNBUFFERED=1 \
     PIP_NO_CACHE_DIR=off \
     PIP_DISABLE_PIP_VERSION_CHECK=on
 
-COPY --from=builder /builder/wheels ./wheels
-COPY --from=builder /builder/requirements.txt ./
+COPY --from=builder /app/wheels ./wheels
+COPY --from=builder /app/requirements.txt ./
 
 RUN pip install --no-cache-dir ./wheels/*