[Snyk] Security upgrade openjdk from 8u181-jdk-slim to 8-jdk-slim

[daniel-schel]

Snyk has created this PR to fix 4 vulnerabilities in the dockerfile dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Snyk changed the following file(s):

• Dockerfile

We recommend upgrading to openjdk:8-jdk-slim, as this image has only 106 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Out-of-bounds Write SNYK-DEBIAN9-FREETYPE-1019584	729
	Directory Traversal SNYK-DEBIAN9-DPKG-2847943	714
	OS Command Injection SNYK-DEBIAN9-OPENSSL-2807589	714
	Out-of-Bounds SNYK-DEBIAN9-SHADOW-306269	714
	Out-of-Bounds SNYK-DEBIAN9-SHADOW-306269	714

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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