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feat(aws-ecr-assets): add support for docker build context
Add support for docker's --build-context flag in docker builds. Fixes #31598
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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/demo-image-build-context/context/hello.txt‎

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Hello from build context!

‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/demo-image-build-context/image/Dockerfile‎

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FROM public.ecr.aws/docker/library/python:3.12-slim
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EXPOSE 8000
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WORKDIR /src
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ADD . /src
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COPY --from=mycontext hello.txt /src/hello.txt
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CMD ["python3", "index.py"]

‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/demo-image-build-context/image/index.py‎

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#!/usr/bin/python
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import sys
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import textwrap
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import http.server
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import socketserver
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PORT = 8000
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# Read the file that was copied from the build context
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try:
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with open('/src/hello.txt', 'r') as f:
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context_message = f.read().strip()
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except FileNotFoundError:
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context_message = 'ERROR: hello.txt not found - build context may not have worked'
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class Handler(http.server.SimpleHTTPRequestHandler):
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def do_GET(self):
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self.send_response(200)
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self.send_header('Content-Type', 'text/html')
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self.end_headers()
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self.wfile.write(textwrap.dedent('''\
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<!doctype html>
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<html><head><title>It works</title></head>
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<body>
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<h1>Hello from the integ test container with build context</h1>
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<p>Message from build context: {message}</p>
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<img src="https://media.giphy.com/media/nFjDu1LjEADh6/giphy.gif">
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</body>
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''').format(message=context_message).encode('utf-8'))
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def main():
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httpd = http.server.HTTPServer(("", PORT), Handler)
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print("serving at port", PORT)
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print("message from build context:", context_message)
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httpd.serve_forever()
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if __name__ == '__main__':
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main()

‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/DockerBuildContextTestDefaultTestDeployAssert7E73C929.assets.json‎

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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/DockerBuildContextTestDefaultTestDeployAssert7E73C929.template.json‎

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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/asset.21592aa0c60f855735949fa2ddd50ccfe5c2662eea8c60a4c95742dbc5aa3206/Dockerfile‎

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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/asset.21592aa0c60f855735949fa2ddd50ccfe5c2662eea8c60a4c95742dbc5aa3206/index.py‎

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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/cdk.out‎

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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/integ-assets-docker-build-context.assets.json‎

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‎packages/@aws-cdk-testing/framework-integ/test/aws-ecr-assets/test/integ.assets-docker-build-context.js.snapshot/integ-assets-docker-build-context.template.json‎

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{
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"Resources": {
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"MyUserDC45028B": {
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"Type": "AWS::IAM::User"
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},
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"MyUserDefaultPolicy7B897426": {
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"Type": "AWS::IAM::Policy",
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"Properties": {
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"PolicyDocument": {
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"Statement": [
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{
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"Action": [
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"ecr:BatchCheckLayerAvailability",
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"ecr:BatchGetImage",
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"ecr:GetDownloadUrlForLayer"
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],
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"Effect": "Allow",
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"Resource": {
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"Fn::Join": [
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"",
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[
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"arn:",
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{
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"Ref": "AWS::Partition"
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},
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":ecr:",
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{
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"Ref": "AWS::Region"
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},
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":",
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{
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"Ref": "AWS::AccountId"
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},
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":repository/",
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{
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"Fn::Sub": "cdk-hnb659fds-container-assets-${AWS::AccountId}-${AWS::Region}"
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}
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]
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]
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}
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},
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{
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"Action": "ecr:GetAuthorizationToken",
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"Effect": "Allow",
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"Resource": "*"
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}
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],
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"Version": "2012-10-17"
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},
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"PolicyName": "MyUserDefaultPolicy7B897426",
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"Users": [
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{
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"Ref": "MyUserDC45028B"
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}
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]
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}
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}
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},
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"Outputs": {
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"ImageUri": {
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"Value": {
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"Fn::Sub": "${AWS::AccountId}.dkr.ecr.${AWS::Region}.${AWS::URLSuffix}/cdk-hnb659fds-container-assets-${AWS::AccountId}-${AWS::Region}:21592aa0c60f855735949fa2ddd50ccfe5c2662eea8c60a4c95742dbc5aa3206"
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}
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}
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},
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"Parameters": {
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"BootstrapVersion": {
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"Type": "AWS::SSM::Parameter::Value<String>",
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"Default": "/cdk-bootstrap/hnb659fds/version",
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"Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
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}
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},
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"Rules": {
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"CheckBootstrapVersion": {
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"Assertions": [
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{
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"Assert": {
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"Fn::Not": [
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{
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"Fn::Contains": [
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[
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"1",
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"2",
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"3",
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"4",
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"5"
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],
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{
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"Ref": "BootstrapVersion"
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}
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]
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}
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]
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},
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"AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
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}
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]
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}
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}
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}

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