我需要幫助 Dockerizing 一個應用程式。
以下是我的requirements.txt：
Flask==0.12
flask-redis==0.3
這是我的app.py：
import os
from flask import Flask
from flask_redis import FlaskRedis
app = Flask(__name__)
app.config['REDIS_URL'] = 'redis://redis:6379/0'
redis = FlaskRedis(app)
@app.route('/')
def counter():
return '{0} {1} {2}'.format('This webpage has been viewed',str(redis.incr('web2_counter')),' time(s).')
我已經像這樣創建了我的 Dockerfile：
FROM python:3.6-stretch
# We don't want to run our application as root if it is not strictly necessary, even in a container.
# Create a user and a group called 'app' to run the processes.
# A system user is sufficient and we do not need a home.
RUN adduser --system --group --no-create-home app
# Place the application components in a dir below the root dir
COPY . /app
# Make the directory the working directory for subsequent commands
WORKDIR /app
# Install from the requirements.txt we copied above
RUN pip install -r requirements.txt --no-cache-dir
# Hand everything over to the 'app' user
RUN chown -R app:app /app
# Subsequent commands, either in this Dockerfile or in a
# docker-compose.yml, will run as user 'app'
USER app
COPY . .
和我的 docker-compose.yml：
version: '3'
services:
web:
build: .
command: flask run --host=0.0.0.0 --port=5000
ports:
- "5000:5000"
environment:
- FLASK_APP=app.py
- FLASK_DEBUG=1
volumes:
- .:/app
depends_on:
- redis
redis:
image: "redis:alpine"
ports:
- '6379:6379'
redis 容器正常啟動，但 web 不啟動。出現以下錯誤：
"Traceback (most recent call last):
File "/usr/local/bin/flask", line 5, in <module>
from flask.cli import main
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/flask/__init__.py", line 19, in <module>
from jinja2 import Markup, escape
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: cannot import name 'Markup' from 'jinja2' (/usr/local/lib/python3.11/site-packages/jinja2/__init__.py)"
預期結果：
curl localhost:5000
此網頁已被瀏覽 N 次
有人可以指出我正確的方向嗎？
uj5u.com熱心網友回復：
您的 requirements.txt 應該包含所有需要的要求。像這樣的東西
Flask==1.1.1
Jinja2==2.11.3
MarkupSafe==2.0.1
itsdangerous==1.1.0
Werkzeug==2.0.2
flask-redis==0.3
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