Update poetry install --no-dev flag

Author: CalPinSW

.github/workflows/ci-pipeline.yml

@@ -7,5 +7,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - run: docker build --target test --tag backend:test ./backend/
+      - run: docker build --target test --tag backend:test ./backend
       - run: docker run --env-file backend/.env backend:test

backend/Dockerfile

@@ -13,7 +13,7 @@ COPY pyproject.toml .
 COPY gunicorn.conf.py .
 RUN python -m venv venv
 
-RUN ["poetry", "install", "--no-dev"]
+RUN ["poetry", "install", "--only", "main"]
 
 EXPOSE 5000