Fix worker builds by installing docker-credential-ecr-login through a… #216

	# Build Docker files from scratch after each commit to master.
	# We do this in case there are any issues with the Dockerfiles
	# that were missed in the Test CI pipelines by Docker caching.
	name: Postcommit

	on:
	push:
	branches: [ master ]

	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	strategy:
	matrix:
	service: [rest-server, worker, frontend]
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: 3.7
	- uses: actions/cache@v3
	with:
	path: ~/.cache/pip
	key: pip-${{ hashFiles('requirements.txt') }}
	restore-keys: \|
	pip-
	- run: pip install -r requirements.txt
	- run: python3 codalab_service.py build

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