Running shell script against Localstack in docker container

Question

I've been using localstack to develop a service against locally. I've just been running their docker image via docker run --rm -p 4567-4583:4567-4583 -p 8080:8080 localstack/localstack

And then I manually run a small script to set up my S3 buckets, SQS queues, etc.

Now, I'd like to make this easier for others so I thought I'd just add a Dockerfile and docker-compose.yml file. Unfortunately, when I try to get this up and running, using docker-compose up I get an error that the command from my setup script can't connect to the localstack services.

make_bucket failed: s3://localbucket Could not connect to the endpoint URL: "http://localhost:4572/localbucket"

Dockerfile:

FROM localstack/localstack

#since this is just local dev set up, localstack doesn't require 
anything specific here.
ENV AWS_DEFAULT_REGION='[useast1]'
ENV AWS_ACCESS_KEY_ID='[lloyd]'
ENV AWS_SECRET_ACCESS_KEY='[christmas]'

COPY bin/localSetup.sh /localSetup.sh
COPY fixtures/notifications.json /notifications.json
RUN ["chmod", "+x", "/localSetup.sh"]
RUN pip install awscli

# expose service & web dashboard ports
EXPOSE 4567-4582 8080

ENTRYPOINT ["/localSetup.sh"]

docker-compose.yml

version: '3'
services:
  localstack:
    build: .
    ports:
      - "8080:8080"
      - "4567-4582:4567-4582"

localSetup.sh

#!/bin/bash

aws --endpoint-url=http://localhost:4572 s3 mb s3://localbucket
#additional similar calls but left off for brevity

I've tried switching localhost to 127.0.0.1 in my script commands, but I wind up with the same error. I'm probably missing something silly here.

Answer 1

There is another way to create your custom AWS resources when localstack freshly starts up. Since you already have a bash script for your resources, you can simply volume mount your script to /docker-entrypoint-initaws.d/. So my docker-compose file would be:

localstack:
    image: localstack/localstack:latest
    container_name: localstack_aws
    ports:
      - '4563-4599:4563-4599'
      - '8055:8080'
    environment:
      - SERVICES=s3
      - DEFAULT_REGION=us-east-1
    volumes:
      - './localSetup.sh:/docker-entrypoint-initaws.d/make-s3.sh'

Also, I would prefer awslocal over aws --endpoint in the bash script, as it leverages the credentials work and endpoint for you.