Add dart

library/dart

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+Maintainers: Alexander Thomas <athom@google.com> (@athomas), Tony Pujals <tonypujals@google.com> (@tonypujals)
+GitRepo: https://github.com/dart-lang/dart-docker.git
+GitFetch: refs/heads/main
+GitCommit: c3f2dbac4f552bd5e94965dd6de80bcdf897d963
+
+Tags: 2.12.4-sdk, 2.12-sdk, 2-sdk, stable-sdk, sdk, 2.12.4, 2.12, 2, stable, latest
+Directory: stable/buster
+
+Tags: 2.13.0-211.14.beta-sdk, beta-sdk, 2.13.0-211.14.beta, beta
+Directory: beta/buster

test/tests/dart-hello-world/container.dart

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+void main() {
+  print('Hello World!');
+}

test/tests/dart-hello-world/expected-std-out.txt

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+Hello World!

test/tests/dart-hello-world/run.sh

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+../run-dart-in-container.sh

test/tests/run-dart-in-container.sh

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+#!/bin/bash
+set -e
+
+testDir="$(readlink -f "$(dirname "$BASH_SOURCE")")"
+runDir="$(dirname "$(readlink -f "$BASH_SOURCE")")"
+
+source "$runDir/run-in-container.sh" "$testDir" "$1" dart ./container.dart