add github workflows to build test. #4

	# This is workflow to build parameter server in ros docker images
	name: build

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:

	rolling-docker:
	runs-on: ubuntu-latest
	container:
	image: ros:rolling
	steps:
	- name: test
	shell: bash
	run: \|
	source /opt/ros/rolling/setup.bash
	ros2 topic list

	iron-docker:
	runs-on: ubuntu-latest
	container:
	image: ros:iron
	steps:
	- name: test
	shell: bash
	run: \|
	source /opt/ros/iron/setup.bash
	ros2 service list

	humble-docker:
	runs-on: ubuntu-latest
	container:
	image: ros:humble
	steps:
	- name: test
	shell: bash
	run: \|
	source /opt/ros/humble/setup.bash
	ros2 node list

Provide feedback