[wip] Add util script for building/pushing Docker images

[whummer]

Motivation

A common use case we're seeing is to build multi-arch Docker images with semantic versioning (build tags like :3, 3.1, latest, etc), for which we currently have targets in the Makefile (docker-build, docker-push-master, docker-create-push-manifests, etc). Maintaining this non-trivial logic in the Makefile is cumbersome, and we could also benefit from making it reusable across different repos. This PR is a first step towards making these targets reusable across different repos, including -ext, the upcoming Snowflake image, etc.

Changes

Add util script for building/pushing Docker images. The script follows a similar structure as the existing bin/release-helper.sh script we already have in place.

🚧 more details following soon.. /cc @alexrashed

TODOs:

• add logic to extract correct major/minor/patch version numbers from __version__ in __init__.py files

Testing

The script has been tested in an upstream pipeline (snowflake repo). Still need to coordinate whether and how to integrate the script into the build process of this repo.

[coveralls]

coverage: 83.839% (-0.02%) from 83.858%
when pulling a3cba16 on docker-helper
into 6880b98 on master.

[github-actions]

LocalStack Community integration with Pro

    2 files  ± 0      2 suites  ±0   1h 26m 46s ⏱️ + 2m 15s
2 657 tests +12  2 406 ✅ +9  251 💤 +3  0 ❌ ±0 
2 659 runs  +12  2 406 ✅ +9  253 💤 +3  0 ❌ ±0 

Results for commit 0c4b4b3. ± Comparison against base commit 6880b98.

This pull request removes 1 and adds 13 tests. Note that renamed tests count towards both.

tests.aws.services.lambda_.test_lambda.TestLambdaURL ‑ test_lambda_url_echo_invoke

tests.aws.services.cloudformation.resources.test_apigateway.TestServerlessApigwLambda ‑ test_serverless_like_deployment_with_update
tests.aws.services.lambda_.test_lambda.TestLambdaURL ‑ test_lambda_update_function_url_config
tests.aws.services.lambda_.test_lambda.TestLambdaURL ‑ test_lambda_url_echo_invoke[BUFFERED]
tests.aws.services.lambda_.test_lambda.TestLambdaURL ‑ test_lambda_url_echo_invoke[None]
tests.aws.services.lambda_.test_lambda.TestLambdaURL ‑ test_lambda_url_echo_invoke[RESPONSE_STREAM]
tests.aws.services.lambda_.test_lambda.TestLambdaURL ‑ test_lambda_url_invalid_invoke_mode
tests.aws.services.sqs.test_sqs.TestSqsProvider ‑ test_fifo_high_throughput_ordering[sqs]
tests.aws.services.sqs.test_sqs.TestSqsProvider ‑ test_fifo_high_throughput_ordering[sqs_json]
tests.aws.services.sqs.test_sqs.TestSqsProvider ‑ test_sqs_fifo_same_dedup_id_different_message_groups[sqs]
tests.aws.services.sqs.test_sqs.TestSqsProvider ‑ test_sqs_fifo_same_dedup_id_different_message_groups[sqs_json]
…