mkdir demo && cd demo
app.py Dockerfile requirements.txt
cat app.py
from flask import Flask
import os
import socketapp = Flask(__name__)@app.route(“/”)def hello():
html = “<h3>Hello {name}!</h3>” \
“<b>Hostname:</b> {hostname}<br/>”
return html.format(name=os.getenv(“NAME”, “world”), hostname=socket.gethostname()) if __name__ == “__main__”:
app.run(host=’0.0.0.0', port=80)
cat requirements.txt
Flask
cat Dockerfile
FROM python
WORKDIR /app
ADD . /app
RUN pip install -r requirements.txt
EXPOSE 80
ENV NAME world
CMD [“python”, “app.py”]
sudo docker build -t python_image .
Sending build context to Docker daemon 4.096kB
Step 1/7 : FROM python
latest: Pulling from library/python
e756f3fdd6a3: Pull complete
bf168a674899: Pull complete
e604223835cc: Pull complete
6d5c91c4cd86: Pull complete
2cc8d8854262: Pull complete
2767dbfeeb87: Pull complete
e5f27d860d89: Pull complete
98a3e4f5f5ed: Pull complete
5f15c8bc4073: Pull complete
Digest: sha256:cddebe04ec7846e28870cf8624b46313a22e6407b51ced3776588784caa12d27
Status: Downloaded newer image for python:latest
---> e4ccc57bca82
Step 2/7 : WORKDIR /app
---> Running in ff2ddecedf1a
Removing intermediate container ff2ddecedf1a
---> 216451a196d4
Step 3/7 : ADD . /app
---> 8798f58d3ca4
Step 4/7 : RUN pip install -r requirements.txt
---> Running in 7b16d7706700
Collecting Flask
Downloading Flask-2.1.2-py3-none-any.whl (95 kB)
<...>
---> 1c5329bdcfa4
Step 5/7 : EXPOSE 80
---> Running in f2b2069cde38
Removing intermediate container f2b2069cde38
---> d54fa11a3081
Step 6/7 : ENV NAME world
---> Running in 575ab4d7ebc4
Removing intermediate container 575ab4d7ebc4
---> 69aeb91ae6f1
Step 7/7 : CMD [“python”, “app.py”]
---> Running in bd240f809762
Removing intermediate container bd240f809762
---> b79fddc1c1c7
Successfully built b79fddc1c1c7
Successfully tagged python_image:latest
sudo docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
python_image latest b79fddc1c1c7 About a minute ago 932MB
sudo docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: jpmolekunnel
Password:
Login Succeeded
sudo docker tag python_image jpmolekunnel/python_image:Version1
sudo docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
jpmolekunnel/python_image Version1 b79fddc1c1c7 21 minutes ago 932MB
python_image latest b79fddc1c1c7 21 minutes ago 932MB
sudo docker push jpmolekunnel/python_image:Version1
The push refers to repository [docker.io/jpmolekunnel/python_image]
cf3c9222e477: Pushed
0382ebd3d0c9: Pushed
71b4186a91d4: Pushed
9fda40ddc568: Mounted from library/python
428e1f341db7: Mounted from library/python
9ea8d200cd5d: Mounted from library/python
13b045a1dfd2: Mounted from library/python
2fbabeba902e: Mounted from library/python
ee509ed6e976: Mounted from library/python
9177197c67d0: Mounted from library/python
7dbadf2b9bd8: Mounted from library/python
e7597c345c2e: Mounted from library/python
Version1: digest: sha256:eee7610b131194e4895e8ab32b5d63eb557004975e3e355f9953bd6a657a0a19 size: 2843
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