Hello world container instance application terminates repeatedly on successful deploy

Question

Hello world container instance application terminates repeatedly on successful deploy

Peter 20

Followed the 3-step tutorial for building and deploying a container instance described here:

https://learn.microsoft.com/nb-no/azure/container-instances/container-instances-tutorial-prepare-app

I've also tried building and launching the image described in this article (by recommandation from microsoft support), with the exact same result: https://www.site24x7.com/learn/build-docker-images-azure-container-registry.html

I am able to run the application locally, and all tutorial steps executes successfully.

I've verified that the azure docker registry has been created
I've verified that the docker image is available in the registry
The container instance using the uploaded image is launched successfully

However, after deploying successfully (according to azure cli / azure GUI), the app instantly terminates, and keeps restarting + terminating.
There are no errors, except for a warning that states that the container "is in a Waiting state and may not be running". I am using a Macbook Air M1.

Peter 20

Some more information. The very lightweight application I am trying to run is this one:

FROM node:16-alpine
WORKDIR /app
COPY index.html .
RUN npm i http-server
CMD ["npx", "http-server"]
EXPOSE 8080

index.html:

<!DOCTYPE html> 
<meta charset="UTF-8">
<title>Hello Docker</title> 
<style> 
html, body { 
  width: 100%; 
  height: 100%; 
  margin: 0;
  font-family: Candara, Calibri, Segoe, Segoe UI, Optima, Arial, sans-serif; 
} 
body { 
  display: flex;
  justify-content: center;
  align-items: center;
} 
h1 { 
  font-size: 4rem; 
  color: white; 
  -webkit-background-clip: text; 
  background-clip: text; 
  -webkit-text-fill-color: transparent; 
  -moz-text-fill-color: transparent; 
  background-image: linear-gradient(135deg,#0e73cc 1.93%,#624bbb 14.86%,#ff455d 48.09%,#f35815 77.82%,#f2b600 97.3%); 
} 
</style> 
<h1>This is working!</h1>

Every step is successful (building image, testing application locally, pushing to azure repository, deploying container image).

az container show --resource-group myResourceGroup --name demo-container --query instanceView.state
"Running"

I can also see that all steps have executed successfully in the azure dashboard. However, the deployed application keeps terminating and restarting. I have also tried several other images, amongst others the official hello-world app https://github.com/Azure-Samples/aci-helloworld

but getting the exact same result with all of them.

3 answers

Your answer

Peter 20 Reputation points

2023-04-06T14:10:37.15+00:00

Some more information. The very lightweight application I am trying to run is this one:

FROM node:16-alpine WORKDIR /app COPY index.html . RUN npm i http-server CMD ["npx", "http-server"] EXPOSE 8080

index.html:

<!DOCTYPE html> <meta charset="UTF-8"> <title>Hello Docker</title> <style> html, body { width: 100%; height: 100%; margin: 0; font-family: Candara, Calibri, Segoe, Segoe UI, Optima, Arial, sans-serif; } body { display: flex; justify-content: center; align-items: center; } h1 { font-size: 4rem; color: white; -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; -moz-text-fill-color: transparent; background-image: linear-gradient(135deg,#0e73cc 1.93%,#624bbb 14.86%,#ff455d 48.09%,#f35815 77.82%,#f2b600 97.3%); } </style> <h1>This is working!</h1>

Every step is successful (building image, testing application locally, pushing to azure repository, deploying container image).

az container show --resource-group myResourceGroup --name demo-container --query instanceView.state "Running"

I can also see that all steps have executed successfully in the azure dashboard. However, the deployed application keeps terminating and restarting. I have also tried several other images, amongst others the official hello-world app https://github.com/Azure-Samples/aci-helloworld

but getting the exact same result with all of them.

Answer 1

Peter 20

It appears M1 Macbooks target Arm64 by default. I was able to resolve it by specifying platform to the docker build command. E.g.:

docker build --platform=linux/amd64 -t my-image .

Answer 2

troubleshoot

check your container logs

az container logs --resource-group <your-resource-group> --name <your-container-instance-name>

Check container instance events

go to the "Events" tab for your container instance to see if there are any events related to the container's startup

Verify the Dockerfile

Ensure that your Dockerfile is set up correctly, especially the CMD or ENTRYPOINT instructions that define how your application should start

if you have a chance Before deploying to Azure Container Instances, try running your container image locally using Docker

Answer 3

deherman-MSFT 38,021 Microsoft Employee Moderator

@Peter We are glad you were able to resolve your issue. Thank you for coming back and sharing the resolution to the community. Please accept an answer on this case. This will make the thread more visible and help future community users. Thanks again and have a great day!

Please don’t forget to "Accept the answer" and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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Hello world container instance application terminates repeatedly on successful deploy

3 answers

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