[Python] starting container process caused: exec: "uvicorn": executable file not found in...

I'm trying to Dockerize my FastApi app, but it crashes with this error right after I run the command:

docker-compose -f local.yml up -d


Can anyone help me, please?

Dockerfile:

FROM python:3.6.11-alpine3.11
ARG MYSQL_SERVER
ARG POSTGRES_SERVER
ENV ENVTYPE=local
ENV PYTHONUNBUFFERED 1
ENV APP_HOME=/home/app/web
RUN mkdir -p $APP_HOME
WORKDIR $APP_HOME

RUN apk update && apk add --no-cache bash
ADD /compose/scripts.sh $APP_HOME
ADD /requirements/$ENVTYPE.txt $APP_HOME
RUN chmod +x scripts.sh

RUN ./scripts.sh
RUN pip install -r /home/app/web/$ENVTYPE.txt; mkdir /log;

COPY /src/ $APP_HOME
CMD ["uvicorn", "app.main:app", "--reload", "--host", "0.0.0.0", "--port", "8080"]


local.yml file:

version: '3.7'
services:
nginx:
env_file: .env
build:
context: .
dockerfile: ./compose/local/nginx.Dockerfile
restart: always
ports:
- "${EX_PORT_NGINX:-8030}:80"
volumes:
- ./nginx/site.conf:/etc/nginx/conf.d/default.conf
core:
env_file: .env
build:
context: .
dockerfile: ./compose/local/core.Dockerfile
args:
MYSQL_SERVER: ${MYSQL_SERVER:-}
POSTGRES_SERVER: ${POSTGRES_SERVER:-}
restart: always
volumes:
- ./src:/home/app/web/
logging:
driver: "json-file"
options:
max-size: "5m"
max-file: "10"


Error:

Cannot start service core: failed to create shim: OCI runtime create failed: container_linux.go:380: starting container process caused: exec: "uvicorn": executable file not found in $PATH: unknown

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