'Strange Output in Alpine Docker Image - AWS CLI

I've created a Dockerfile that will be used to run some AWS CLI commands in a CI/CD environment. The Dockerfile is Alpine based and looks like this:

FROM frolvlad/alpine-glibc:alpine-3.14

ENV AWS_CLI_VER=2.4.5

RUN apk update && apk add --no-cache bash curl zip &&  \
    curl -s https://awscli.amazonaws.com/awscli-exe-linux-x86_64-${AWS_CLI_VER}.zip -o awscliv2.zip && \
    unzip awscliv2.zip && ./aws/install && rm awscliv2.zip

When I run an AWS CLI command (aws cloudformation create-stack), it works successfully, but I'm getting weird output in the console, looks like this:

   "StackId": "arn:aws:cloudformation:us-east-1:525606957925:stack/SearchAPI-bsd-sales-salesx-dev/3ec182f0-a243-11eb-92b1-0e89978ed963"
}

~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~

The output I'm expecting is displayed at the top but cut off due to all the repeating '~'. Seems to be related to the AWS CLI command as it's the only time it seems to happen, but I'm not sure if this is an Alpine/Linux terminal issue I need to configure further. I'm a Linux noob, so any help is appreciated.

linuxdockerterminalalpine


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