Add a linux docker build #16

	name: Build Pull Request
	on:
	pull_request:

	defaults:
	run:
	shell: bash

	jobs:
	build_plugin:
	name: PR - ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	include:
	- os: windows-latest
	- os: macos-latest
	- os: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	submodules: recursive

	- name: Prepare for JUCE
	uses: surge-synthesizer/sst-githubactions/prepare-for-juce@main
	with:
	os: ${{ runner.os }}

	- name: Build pull request version
	run: \|
	cmake -S . -B ./build -DCMAKE_BUILD_TYPE=Debug
	cmake --build ./build --config Debug --target monique-staged --parallel 3

	build_plugin_lindoc:
	name: PR - U18 Docker
	runs-on: ubuntu-latest
	container:
	image: ghcr.io/surge-synthesizer/sst-dockerimages/ubuntu18_gcc11:main
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	submodules: recursive

	- name: Build pull request version
	run: \|
	export VUID=$(id -u)
	export VGID=$(id -g)

	docker pull ghcr.io/surge-synthesizer/sst-dockerimages/ubuntu18_gcc11:main
	docker create --user $VUID:$VGID --name u18_build --interactive --tty \
	--volume=`pwd`:/home/build/plugin ghcr.io/surge-synthesizer/sst-dockerimages/ubuntu18_gcc11:main
	docker start u18_build

	docker exec u18_build bash -c "(cd /home/build/plugin && \
	cmake -S . -B ./build -DCMAKE_BUILD_TYPE=Debug && \
	cmake --build ./build --config Debug --target monique-staged --parallel 3 )"
	docker stop u18_build_bash
	ls -al

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