I’m following this Dockerized Flask App guide with success!
I am now adapting my own code, and started with two small changes of setting the base image to FROM python:3.7.3-stretch and adding opencv-python==4.4.0.42 as a requirement (I did this as a docker image on my own local machine successfully). On the Droplet, I see that the container is being successfully created but won’t continue to run even though it’s being invoked with a -d argument. Here’s the output:
#docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nlp.test latest 226105eb5bb1 20 minutes ago 1.23GB
root@NLP-FlaskApp-docker-ubuntu-s-1vcpu-2gb-nyc1-01:/var/www/nlpApp# docker run -d -p 56734:80 --name=nlp.test -v $PWD:/app nlp.test
bcb213b1c1ce5e40f29092f0afbcf6b5e1fa1b76e7922a548af806cd9e43dfec
root@NLP-FlaskApp-docker-ubuntu-s-1vcpu-2gb-nyc1-01:/var/www/nlpApp# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
So nothing shows up as running after the command. I also tried running the same command with different port numbers that I checked are open as well as using the start.sh file given in the guide above.
Please let me know of any debug ideas! Thanks
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
The issue is using Alpine linux, it seems to be incompatible with opencv-python as a requirement.
Also you can’t simply change base images because the one in the guide provides functionality of uwsgi and Nginx
Hi there @frankieguz,
Usually in such cases, what I could suggest is to add the -a argument to the docker ps -a command. That way you will see all of the containers and not just the running ones.
That way you can grab the container ID of the crashing container and check the logs with the docker logs container_id command to get more information on what’s wrong.
Hope that this helps! Regards, Bobby
Become a contributor for community
Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.
DigitalOcean Documentation
Full documentation for every DigitalOcean product.
Resources for startups and SMBs
The Wave has everything you need to know about building a business, from raising funding to marketing your product.
The developer cloud
Scale up as you grow — whether you're running one virtual machine or ten thousand.
Get started for free
Sign up and get $200 in credit for your first 60 days with DigitalOcean.*
*This promotional offer applies to new accounts only.