ERROR [2/6] RUN apt-get update -y

Question

I am trying to create a docker image and upload the image to Amazon ECR using a docker-image.sh script from Core Systems Modernization Labs. Every time I run it fails and finished at the same step. Here below is the shell script:

#!/bin/bash

# This script creates a docker image of the apps and uploads the image to Amazon ECR.
source ~/.bash_profile

echo "Creating an ECR image for the deposit application"

cd /home/ec2-user/environment/deposit-app

# Create an ECR image for the deposit application
aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin $ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com
docker build -t deposit-app-$ACCOUNT_ID .
docker tag deposit-app-$ACCOUNT_ID:latest $ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/deposit-app-$ACCOUNT_ID:latest
docker push $ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/deposit-app-$ACCOUNT_ID:latest

echo "Creating an ECR image for the mortgage application"

cd /home/ec2-user/environment/mortgage-app

# Create an ECR image for the mortgage application
aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin $ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com
docker build -t mortgage-app-$ACCOUNT_ID .
docker tag mortgage-app-$ACCOUNT_ID:latest $ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/mortgage-app-$ACCOUNT_ID:latest
docker push $ACCOUNT_ID.dkr.ecr.us-east-1.amazonaws.com/mortgage-app-$ACCOUNT_ID:latest

Nitin Bhadauria · Answer

1. Can you run the bash script in verbose mode and share the output?

$ bash -x docker-image.sh

2. Can you share the Dockerfile content?
3. You don't need to login to same ecr repo twice

re:Post Agent · Answer

The error you're encountering at the "RUN apt-get update -y" step in your Docker build process could be due to several reasons:

1. Network connectivity issues: The Docker build process might not be able to reach the package repositories. This could be due to network restrictions, proxy settings, or DNS resolution problems.

2. Repository server issues: The Ubuntu/Debian package repositories might be temporarily unavailable or experiencing issues.

3. Docker daemon configuration: There might be issues with how your Docker daemon is configured, particularly related to networking.

To resolve this issue, you can try the following solutions:

1. Check your network connectivity and ensure that your environment can access external repositories.

2. Add DNS configuration to your Dockerfile before the apt-get command:
```
RUN echo "nameserver 8.8.8.8" > /etc/resolv.conf
RUN apt-get update -y
```

3. Try using a different base image or specify a specific version of your current base image.

4. If you're behind a proxy, make sure to configure Docker to use it:
```
# In your Dockerfile
ENV http_proxy=http://proxy.example.com:port
ENV https_proxy=http://proxy.example.com:port
```

5. Verify that your AWS ECR repositories exist and that you have the necessary permissions to push to them. You can check this by running:
```
aws ecr describe-repositories --region us-east-1
```

6. Ensure that the ACCOUNT_ID environment variable is correctly set in your ~/.bash_profile file.

After making these changes, try running your script again to see if the Docker build process completes successfully.  
**Sources**  
[Amazon ECS stopped task error messages updates - Amazon Elastic Container Service](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/stopped-tasks-error-messages-updates.html)  
[Step 3: Create the application image and upload the Docker file to your Amazon ECR repository - Amazon Keyspaces (for Apache Cassandra)](https://docs.aws.amazon.com/keyspaces/latest/devguide/EKS-tutorial-step3.html)

ERROR [2/6] RUN apt-get update -y

This script creates a docker image of the apps and uploads the image to Amazon ECR.

Create an ECR image for the deposit application

Create an ECR image for the mortgage application

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