El proceso es el siguiente. se parte del archivo Dockerfile que tiene las instrucciones de como se constuirá la imagen de docker. en este caso instala un linux minimalista al cual le instala los paquetes python3 y pip, crea un subdirectorio donde radicaran los fuentes de la aplicación en la imagen docker final, se ejecutan comandos para postinstalación de dependencias de la aplicación python, se expone el puerto 5000 en el contenedor docker, al cual se le indica que Docker debera iniciar ejecución de la aplicación python.
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ ls
api app.py __pycache__ venv
Ejecutando los dos primeros pasos en el archivo Dockerfile tenemos
contenido Dockerfile
FROM alpine:latest
RUN apk add --no-cache python3-dev \
&& pip3 install --upgrade pip
ejecutando en terminal
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker build -t flaskapp:latest . Sending build context to Docker daemon 36.62MB Step 1/2 : FROM alpine:latest latest: Pulling from library/alpine e7c96db7181b: Pull complete Digest: sha256:769fddc7cc2f0a1c35abb2f91432e8beecf83916c421420e6a6da9f8975464b6 Status: Downloaded newer image for alpine:latest ---> 055936d39205 Step 2/2 : RUN apk add --no-cache python3-dev && pip3 install --upgrade pip ---> Running in 3f25b54f2a94 fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz (1/13) Installing pkgconf (1.6.0-r0) (2/13) Installing libbz2 (1.0.6-r6) (3/13) Installing expat (2.2.6-r0) (4/13) Installing libffi (3.2.1-r6) (5/13) Installing gdbm (1.13-r1) (6/13) Installing xz-libs (5.2.4-r0) (7/13) Installing ncurses-terminfo-base (6.1_p20190105-r0) (8/13) Installing ncurses-terminfo (6.1_p20190105-r0) (9/13) Installing ncurses-libs (6.1_p20190105-r0) (10/13) Installing readline (7.0.003-r1) (11/13) Installing sqlite-libs (3.28.0-r0) (12/13) Installing python3 (3.6.8-r2) (13/13) Installing python3-dev (3.6.8-r2) Executing busybox-1.29.3-r10.trigger OK: 105 MiB in 27 packages Collecting pip Downloading https://files.pythonhosted.org/packages/5c/e0/be401c003291b56efc55aeba6a80ab790d3d4cece2778288d65323009420/pip-19.1.1-py2.py3-none-any.whl (1.4MB) Installing collected packages: pip Found existing installation: pip 18.1 Uninstalling pip-18.1: Successfully uninstalled pip-18.1 Successfully installed pip-19.1.1 Removing intermediate container 3f25b54f2a94 ---> d0bc58770e6e Successfully built d0bc58770e6e Successfully tagged flaskapp:latest (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$
Podemos verificar la imagen
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker images REPOSITORY TAG IMAGE ID CREATED SIZE flaskapp latest d0bc58770e6e 6 minutes ago 97.1MB
Ejecutamos la imagen con modo iterativo y habilitando una terminal
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker run -it flaskapp /bin/sh / # ls bin etc lib mnt proc run srv tmp var dev home media opt root sbin sys usr / #
En otra terminal exploramos los procesos de docker activos
bext@bext-VPCF13WFX:~$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 2ab076475cd3 flaskapp "/bin/sh" 2 minutes ago Up 2 minutes hardcore_stallman bext@bext-VPCF13WFX:~$
Se observa nada en PORTS.
Verificamos en el contenedor docker con linux alpine que tenga instalado python3 y pip
/ # python3
Python 3.6.8 (default, Apr 8 2019, 18:17:52)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> quit()
/ # pip
Usage:
pip <command> [options]
Commands:
install Install packages.
download Download packages.
uninstall Uninstall packages.
freeze Output installed packages in requirements format.
list List installed packages.
show Show information about installed packages.
check Verify installed packages have compatible dependencies.
config Manage local and global configuration.
search Search PyPI for packages.
wheel Build wheels from your requirements.
hash Compute hashes of package archives.
completion A helper command used for command completion.
help Show help for commands.
General Options:
-h, --help Show help.
--isolated Run pip in an isolated mode, ignoring environment variables and user configuration.
-v, --verbose Give more output. Option is additive, and can be used up to 3 times.
-V, --version Show version and exit.
-q, --quiet Give less output. Option is additive, and can be used up to 3 times (corresponding to WARNING, ERROR, and
CRITICAL logging levels).
--log <path> Path to a verbose appending log.
--proxy <proxy> Specify a proxy in the form [user:passwd@]proxy.server:port.
--retries <retries> Maximum number of retries each connection should attempt (default 5 times).
--timeout <sec> Set the socket timeout (default 15 seconds).
--exists-action <action> Default action when a path already exists: (s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort.
--trusted-host <hostname> Mark this host as trusted, even though it does not have valid or any HTTPS.
--cert <path> Path to alternate CA bundle.
--client-cert <path> Path to SSL client certificate, a single file containing the private key and the certificate in PEM format.
--cache-dir <dir> Store the cache data in <dir>.
--no-cache-dir Disable the cache.
--disable-pip-version-check
Don't periodically check PyPI to determine whether a new version of pip is available for download. Implied
with --no-index.
--no-color Suppress colored output
/ #
Ahora salimos del contenedor con exit, el contenedor se detiene y lo podemos verificar con docker ps que no reporta su ejecución.
/ # exit (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$
Ahora consideramos más pasos en el Dockerfile. WORKDIR, COPY y RUN
FROM alpine:latest
RUN apk add --no-cache python3-dev \
&& pip3 install --upgrade pip
WORKDIR /app
COPY . /app
RUN pip3 --no-cache-dir install -r requirements.txt
Ahora generamos de nuevo la imagen
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker build -t flaskapp:latest . Sending build context to Docker daemon 36.62MB Step 1/5 : FROM alpine:latest ---> 055936d39205 Step 2/5 : RUN apk add --no-cache python3-dev && pip3 install --upgrade pip ---> Using cache ---> d0bc58770e6e Step 3/5 : WORKDIR /app ---> Running in ebbb81b8d41b Removing intermediate container ebbb81b8d41b ---> 68ff8f17bb98 Step 4/5 : COPY . /app ---> b156c636e292 Step 5/5 : RUN pip3 --no-cache-dir install -r requirements.txt ---> Running in 2fae4dca86c2 Collecting flask (from -r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/9a/74/670ae9737d14114753b8c8fdf2e8bd212a05d3b361ab15b44937dfd40985/Flask-1.0.3-py2.py3-none-any.whl (92kB) Collecting Werkzeug>=0.14 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/9f/57/92a497e38161ce40606c27a86759c6b92dd34fcdb33f64171ec559257c02/Werkzeug-0.15.4-py2.py3-none-any.whl (327kB) Collecting click>=5.1 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/fa/37/45185cb5abbc30d7257104c434fe0b07e5a195a6847506c074527aa599ec/Click-7.0-py2.py3-none-any.whl (81kB) Collecting itsdangerous>=0.24 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/76/ae/44b03b253d6fade317f32c24d100b3b35c2239807046a4c953c7b89fa49e/itsdangerous-1.1.0-py2.py3-none-any.whl Collecting Jinja2>=2.10 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/1d/e7/fd8b501e7a6dfe492a433deb7b9d833d39ca74916fa8bc63dd1a4947a671/Jinja2-2.10.1-py2.py3-none-any.whl (124kB) Collecting MarkupSafe>=0.23 (from Jinja2>=2.10->flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/b9/2e/64db92e53b86efccfaea71321f597fa2e1b2bd3853d8ce658568f7a13094/MarkupSafe-1.1.1.tar.gz Installing collected packages: Werkzeug, click, itsdangerous, MarkupSafe, Jinja2, flask Running setup.py install for MarkupSafe: started Running setup.py install for MarkupSafe: finished with status 'done' Successfully installed Jinja2-2.10.1 MarkupSafe-1.1.1 Werkzeug-0.15.4 click-7.0 flask-1.0.3 itsdangerous-1.1.0 Removing intermediate container 2fae4dca86c2 ---> 4a959b0b3a2c Successfully built 4a959b0b3a2c Successfully tagged flaskapp:latest (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$
Algo notable de observar es que los dos primeros pasos ejecutados en la construcción anterior de la imagen no son reejecutados, esto por que usa la cache.
El archivo requirements.txt solo tiene una linea conteniendo flask.
La imagen docker es reportada de la siguiente manera, notese el tamaño a incrementado
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker images REPOSITORY TAG IMAGE ID CREATED SIZE flaskapp latest 4a959b0b3a2c 5 minutes ago 134MB
Ahora, debemos ejecutar la aplicación app.py en el contenedor, esto es con la linea ENTRYPOINT que tiene el comando python3 y CMD son los argumentos app.py. que es lo que se haría en la máquina local para ejecutar la aplicación.
Ejecutamos la aplicación en la máquina local a manera de demostración.
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ python3 app.py DEBUG:root:Arrancando la aplicacion * Serving Flask app "app" (lazy loading) * Environment: production WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Debug mode: on INFO:werkzeug: * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit) INFO:werkzeug: * Restarting with stat DEBUG:root:Arrancando la aplicacion WARNING:werkzeug: * Debugger is active! INFO:werkzeug: * Debugger PIN: 243-904-832 ^C(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$
Ahora, agregamos al Dockerfile la instrucción para exponer el puerto 5000
y ejecutar la aplicación.
Dockerfile
FROM alpine:latest RUN apk add --no-cache python3-dev \ && pip3 install --upgrade pip WORKDIR /app COPY . /app RUN pip3 --no-cache-dir install -r requirements.txt EXPOSE 5000 ENTRYPOINT ["python3"] CMD ["app.py"]
Volvemos a contruir la imagen docker
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker build -t flaskapp:latest . Sending build context to Docker daemon 36.62MB Step 1/8 : FROM alpine:latest ---> 055936d39205 Step 2/8 : RUN apk add --no-cache python3-dev && pip3 install --upgrade pip ---> Using cache ---> d0bc58770e6e Step 3/8 : WORKDIR /app ---> Using cache ---> 68ff8f17bb98 Step 4/8 : COPY . /app ---> 0bd4cf31ae74 Step 5/8 : RUN pip3 --no-cache-dir install -r requirements.txt ---> Running in a06f31c5df5f Collecting flask (from -r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/9a/74/670ae9737d14114753b8c8fdf2e8bd212a05d3b361ab15b44937dfd40985/Flask-1.0.3-py2.py3-none-any.whl (92kB) Collecting Jinja2>=2.10 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/1d/e7/fd8b501e7a6dfe492a433deb7b9d833d39ca74916fa8bc63dd1a4947a671/Jinja2-2.10.1-py2.py3-none-any.whl (124kB) Collecting Werkzeug>=0.14 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/9f/57/92a497e38161ce40606c27a86759c6b92dd34fcdb33f64171ec559257c02/Werkzeug-0.15.4-py2.py3-none-any.whl (327kB) Collecting click>=5.1 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/fa/37/45185cb5abbc30d7257104c434fe0b07e5a195a6847506c074527aa599ec/Click-7.0-py2.py3-none-any.whl (81kB) Collecting itsdangerous>=0.24 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/76/ae/44b03b253d6fade317f32c24d100b3b35c2239807046a4c953c7b89fa49e/itsdangerous-1.1.0-py2.py3-none-any.whl Collecting MarkupSafe>=0.23 (from Jinja2>=2.10->flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/b9/2e/64db92e53b86efccfaea71321f597fa2e1b2bd3853d8ce658568f7a13094/MarkupSafe-1.1.1.tar.gz Installing collected packages: MarkupSafe, Jinja2, Werkzeug, click, itsdangerous, flask Running setup.py install for MarkupSafe: started Running setup.py install for MarkupSafe: finished with status 'done' Successfully installed Jinja2-2.10.1 MarkupSafe-1.1.1 Werkzeug-0.15.4 click-7.0 flask-1.0.3 itsdangerous-1.1.0 Removing intermediate container a06f31c5df5f ---> e0ea76e2dc6f Step 6/8 : EXPOSE 5000 ---> Running in 7baf53671d7f Removing intermediate container 7baf53671d7f ---> 8e1d313bddc1 Step 7/8 : ENTRYPOINT ["python3"] ---> Running in 4f7b2a0d9740 Removing intermediate container 4f7b2a0d9740 ---> dbfc1353e1a1 Step 8/8 : CMD ["app.py"] ---> Running in 2c084d02c36f Removing intermediate container 2c084d02c36f ---> 77787fb045e3 Successfully built 77787fb045e3 Successfully tagged flaskapp:latest (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$
Ejecutemos la aplicación
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker run -it flaskapp DEBUG:root:Arrancando la aplicacion Traceback (most recent call last): File "app.py", line 9, in <module> from api import * File "/app/api/__init__.py", line 1, in <module> from flask_restful import Api ModuleNotFoundError: No module named 'flask_restful'
Nos reporta un error. No encuentra flask_restful. Para hallar el error, usaremos la estratégia de ejecutar los comandos desde el contenedor en linux. Así que a la imagen le deshabilitaremos la ejecución de comando ENTRYPOINT, para posteriormente desde linea de comandos intentar importar el supuesto paquete flask_restful con pip desde linea de comandos.
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ nano Dockerfile (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker build -t flaskapp:latest .
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker run -it flaskapp /bin/sh
Dentro del linux del contenedor agregamos la linea flask_restful a requirements.txt
/app # vi requirements.txt
/app # pip3 install -r requirements.txt
Requirement already satisfied: flask in /usr/lib/python3.6/site-packages (from -r requirements.txt (line 1)) (1.0.3)
Collecting flask_restful (from -r requirements.txt (line 2))
Downloading https://files.pythonhosted.org/packages/17/44/6e490150ee443ca81d5f88b61bb4bbb133d44d75b0b716ebe92489508da4/Flask_RESTful-0.3.7-py2.py3-none-any.whl
Requirement already satisfied: Werkzeug>=0.14 in /usr/lib/python3.6/site-packages (from flask->-r requirements.txt (line 1)) (0.15.4)
Requirement already satisfied: click>=5.1 in /usr/lib/python3.6/site-packages (from flask->-r requirements.txt (line 1)) (7.0)
Requirement already satisfied: itsdangerous>=0.24 in /usr/lib/python3.6/site-packages (from flask->-r requirements.txt (line 1)) (1.1.0)
Requirement already satisfied: Jinja2>=2.10 in /usr/lib/python3.6/site-packages (from flask->-r requirements.txt (line 1)) (2.10.1)
Collecting aniso8601>=0.82 (from flask_restful->-r requirements.txt (line 2))
Downloading https://files.pythonhosted.org/packages/45/a4/b4fcadbdab46c2ec2d2f6f8b4ab3f64fd0040789ac7f065eba82119cd602/aniso8601-7.0.0-py2.py3-none-any.whl (42kB)
|████████████████████████████████| 51kB 6.7MB/s
Collecting six>=1.3.0 (from flask_restful->-r requirements.txt (line 2))
Downloading https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
Collecting pytz (from flask_restful->-r requirements.txt (line 2))
Downloading https://files.pythonhosted.org/packages/3d/73/fe30c2daaaa0713420d0382b16fbb761409f532c56bdcc514bf7b6262bb6/pytz-2019.1-py2.py3-none-any.whl (510kB)
|████████████████████████████████| 512kB 394kB/s
Requirement already satisfied: MarkupSafe>=0.23 in /usr/lib/python3.6/site-packages (from Jinja2>=2.10->flask->-r requirements.txt (line 1)) (1.1.1)
Installing collected packages: aniso8601, six, pytz, flask-restful
Successfully installed aniso8601-7.0.0 flask-restful-0.3.7 pytz-2019.1 six-1.12.0
/app #
Entonces a nuestro archivo requirements.txt le agregamos la linea flask_restful, rehabilitamos las lineas ENTRYPOINT en Dockerfile y contruimos nuevamente la imagen, para posteriormente ejecutarla.
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ nano requirements.txt (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ nano Dockerfile (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker build -t flaskapp:latest . Sending build context to Docker daemon 36.62MB Step 1/8 : FROM alpine:latest ---> 055936d39205 Step 2/8 : RUN apk add --no-cache python3-dev && pip3 install --upgrade pip ---> Using cache ---> d0bc58770e6e Step 3/8 : WORKDIR /app ---> Using cache ---> 68ff8f17bb98 Step 4/8 : COPY . /app ---> 80fa082ead42 Step 5/8 : RUN pip3 --no-cache-dir install -r requirements.txt ---> Running in 30f322fc6f39 Collecting flask (from -r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/9a/74/670ae9737d14114753b8c8fdf2e8bd212a05d3b361ab15b44937dfd40985/Flask-1.0.3-py2.py3-none-any.whl (92kB) Collecting flask_restful (from -r requirements.txt (line 2)) Downloading https://files.pythonhosted.org/packages/17/44/6e490150ee443ca81d5f88b61bb4bbb133d44d75b0b716ebe92489508da4/Flask_RESTful-0.3.7-py2.py3-none-any.whl Collecting Jinja2>=2.10 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/1d/e7/fd8b501e7a6dfe492a433deb7b9d833d39ca74916fa8bc63dd1a4947a671/Jinja2-2.10.1-py2.py3-none-any.whl (124kB) Collecting click>=5.1 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/fa/37/45185cb5abbc30d7257104c434fe0b07e5a195a6847506c074527aa599ec/Click-7.0-py2.py3-none-any.whl (81kB) Collecting Werkzeug>=0.14 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/9f/57/92a497e38161ce40606c27a86759c6b92dd34fcdb33f64171ec559257c02/Werkzeug-0.15.4-py2.py3-none-any.whl (327kB) Collecting itsdangerous>=0.24 (from flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/76/ae/44b03b253d6fade317f32c24d100b3b35c2239807046a4c953c7b89fa49e/itsdangerous-1.1.0-py2.py3-none-any.whl Collecting aniso8601>=0.82 (from flask_restful->-r requirements.txt (line 2)) Downloading https://files.pythonhosted.org/packages/45/a4/b4fcadbdab46c2ec2d2f6f8b4ab3f64fd0040789ac7f065eba82119cd602/aniso8601-7.0.0-py2.py3-none-any.whl (42kB) Collecting pytz (from flask_restful->-r requirements.txt (line 2)) Downloading https://files.pythonhosted.org/packages/3d/73/fe30c2daaaa0713420d0382b16fbb761409f532c56bdcc514bf7b6262bb6/pytz-2019.1-py2.py3-none-any.whl (510kB) Collecting six>=1.3.0 (from flask_restful->-r requirements.txt (line 2)) Downloading https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl Collecting MarkupSafe>=0.23 (from Jinja2>=2.10->flask->-r requirements.txt (line 1)) Downloading https://files.pythonhosted.org/packages/b9/2e/64db92e53b86efccfaea71321f597fa2e1b2bd3853d8ce658568f7a13094/MarkupSafe-1.1.1.tar.gz Installing collected packages: MarkupSafe, Jinja2, click, Werkzeug, itsdangerous, flask, aniso8601, pytz, six, flask-restful Running setup.py install for MarkupSafe: started Running setup.py install for MarkupSafe: finished with status 'done' Successfully installed Jinja2-2.10.1 MarkupSafe-1.1.1 Werkzeug-0.15.4 aniso8601-7.0.0 click-7.0 flask-1.0.3 flask-restful-0.3.7 itsdangerous-1.1.0 pytz-2019.1 six-1.12.0 Removing intermediate container 30f322fc6f39 ---> 8ef2dc85cff7 Step 6/8 : EXPOSE 5000 ---> Running in 0692890f6a16 Removing intermediate container 0692890f6a16 ---> 17b16328871c Step 7/8 : ENTRYPOINT ["python3"] ---> Running in cd2b280a590b Removing intermediate container cd2b280a590b ---> ef6538099f56 Step 8/8 : CMD ["app.py"] ---> Running in c9ea84a94729 Removing intermediate container c9ea84a94729 ---> 34a2b83e9c1a Successfully built 34a2b83e9c1a Successfully tagged flaskapp:latest (venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker run -it flaskapp DEBUG:root:Arrancando la aplicacion * Serving Flask app "app" (lazy loading) * Environment: production WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Debug mode: on INFO:werkzeug: * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit) INFO:werkzeug: * Restarting with stat DEBUG:root:Arrancando la aplicacion WARNING:werkzeug: * Debugger is active! INFO:werkzeug: * Debugger PIN: 103-363-790
OK, listo, ahora ya incluyo el paquete y se ejecuto.
(venv) bext@bext-VPCF13WFX:~/DockerAppConfig/DockerSampleApp$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 84ce5734217c flaskapp "python3 app.py" About a minute ago Up About a minute 5000/tcp elated_carson
flaskapp esta corriendo en el puerto 5000 pero no hay respuesta en el postman
Esto es porque aún tenemos que especificar en el comando de linea docker run
el mapeo de puerto con el parametro -p 5000:5000, diciendole que el puerto del contenedor 5000 correspondera al 5000
(venv) bext@bext-VPCF13WFX:~/workspace/flask-crud-rest-app$ docker run -it -p 5000:5000 flaskapp DEBUG:root:Arrancando la aplicacion * Serving Flask app "app" (lazy loading) * Environment: production WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead. * Debug mode: on INFO:werkzeug: * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit) INFO:werkzeug: * Restarting with stat DEBUG:root:Arrancando la aplicacion WARNING:werkzeug: * Debugger is active! INFO:werkzeug: * Debugger PIN: 103-363-790 DEBUG:root:EN post method por task by id. taskId = 444 INFO:werkzeug:172.17.0.1 - - [19/Jun/2019 21:08:42] "POST /api/v1.0/task/Id/444 HTTP/1.1" 200 -
Ya se observa el request que se hizo posteriormente en postman.
Ok.
eot
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