Add Tomcat 8.5 container definition

[testforstephen]

Signed-off-by: Jinbo Wang jinbwan@microsoft.com

[Chuxel]

We should also call this folder java-8-tomcat-8 unless there is a specific reason to stay with 8.5 instead of 8 generally. (Otherwise it would be java-8-tomcat-8.5 ... and other names would be the same.)

[Chuxel]

@testforstephen Is there any way to specify the path of the tomcat sever installed in the container from settings.json?

One of the things we hit was that there were a few people who had a Java path set in their local settings.json. This can be overridden with a container specific settings file.

Here's the tweak we had to make to the Java 8/11/12 definition:

# Copy endpoint specific user settings into container to specify Java path
COPY settings.vscode.json /root/.vscode-remote/data/Machine/settings.json

And .devcontainer/settings.vscode.json looked like this (except for java-12 which had a different home path):

{
    "java.home": "/docker-java-home"
}

We could add this in along with the setting for the Tomcat install path if that is an option.

[testforstephen]

Tomcat has similar environment variable CATALINA_HOME as JAVA_HOME, but the tomcat extension adashen.vscode-tomcat doesn't take use of it, no related VS Code user settings.

To run your application in Tomcat Server, you must invoke the command "Tomcat: Add Tomcat Server" firstly to add a tomcat server from your specified installation path.