Set env in Dockerfile to make Gunicorn use Uvicorn workers

This also reverts the previous commit fc45493.
Now uvicorn workers are used always when running with Docker

Dockerfile

@@ -54,4 +54,6 @@ RUN groupadd -g 998 annif_user && \
  chown -R annif_user:annif_user /annif-projects /Annif/tests/data
 USER annif_user
 
+ENV GUNICORN_CMD_ARGS="--worker-class uvicorn.workers.UvicornWorker"
+
 CMD annif

docker-compose.yml

@@ -7,17 +7,7 @@ services:
  volumes:
  - ${ANNIF_PROJECTS}:/annif-projects
  user: ${MY_UID}:${MY_GID}
- command:
- [
- "gunicorn",
- "-k",
- "uvicorn.workers.UvicornWorker",
- "annif:create_app()",
- "--bind",
- "0.0.0.0:8000",
- "--timeout",
- "600"
- ]
+ command: ["gunicorn", "annif:create_app()", "--bind", "0.0.0.0:8000", "--timeout", "600"]
 
  nginx:
  image: nginx