Docker容器构建失败： /bin/sh：1：烧瓶：未找到

Question

要在没有docker的情况下运行应用程序，我首先运行"exportFLASK_APP=app"，然后运行"flask run"，因此我将其转移到Dockerfile。

这是运行docker-compose-fdocker-compose.yml--build后的错误消息

无法启动服务应用程序：b'OCI运行时创建失败：container_linux。go:348:启动容器进程导致“exec:\“flask\”：在$PATH中找不到可执行文件：未知

通过键入docker compose-f docker compose检查日志。yml logs-f，我看到这个错误，容器退出时代码为127：

/bin/sh： 1：烧瓶：未找到

文件夹结构

tree
  - app
    - __init__.py
  - Dockerfile
  - docker-compose.yml

docker-compose.yml

version: '2' 

services:
  app:
    restart: always
    build: 
      context: .
      dockerfile: Dockerfile
    ports:
      - "5000:5000"
    volumes:
      - .:/app
    depends_on:
      - redis

  redis:
    image: redis
    command: redis-server
    ports:
      - '6379:6379'

文档文件

# Pull base image.
FROM ubuntu

# Install Supervisor.
RUN \
  mkdir /var/log/celery && \
  mkdir /home/ubuntu && \
  apt-get update && \
  apt-get install -y supervisor python-pip wget vim git && \
  rm -rf /var/lib/apt/lists/* && \
  sed -i 's/^\(\[supervisord\]\)$/\1\nnodaemon=true/' /etc/supervisor/supervisord.conf

# needs to be set else Celery gives an error (because docker runs commands inside container as root)
ENV C_FORCE_ROOT=1

# expose port 80 of the container (HTTP port, change to 443 for HTTPS)
EXPOSE 80

# Create virtualenv.
RUN \
  pip2 install --upgrade pip && \
  pip install --upgrade virtualenv && \
  virtualenv -p /usr/bin/python2.7 /home/ubuntu/.virtualenvs

WORKDIR /home/ubuntu/celery-scheduler

ADD requirements.txt /home/ubuntu/tree/

# Install app requirements
RUN \
  . /home/ubuntu/.virtualenvs/bin/activate && \
  pip install -r requirements.txt

COPY . /home/ubuntu/tree

# Copy supervisor configs
RUN \
  cp configs/supervisord.conf /etc/supervisor/supervisord.conf && \
  cp configs/conf.d/*.conf /etc/supervisor/conf.d/

ENV FLASK_APP /home/ubuntu/tree/app/
ENV FLASK_DEBUG 1

CMD ["flask", "run", "--host", "0.0.0.0", "--port", "5000"]

app/____;init__;。py公司

from flask import Flask, render_template
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
import os

db = SQLAlchemy()

def create_app():
    app = Flask(__name__)
    app.config.from_object('config')
    db.init_app(app)

    with app.app_context():
        db.create_all()
    return app

from app import models
app = create_app()
migrate = Migrate(app, db)

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080, debug=True)

Answer 1

这一行：

RUN \
  . /home/ubuntu/.virtualenvs/bin/activate && \
  pip install -r requirements.txt

只会为该特定命令激活您的虚拟环境

由于virtualenv激活实际上只能归结为路径操作，因此可以通过ENV

这应该工作：

ENV PATH=/home/ubuntu/.virtualenvs/bin:$PATH
RUN pip install -r requirements.txt