Update batch scripts to reflect use of conda instead of pip. #1808

	name: Build FreeDV (Linux)

	on:
	push:
	branches-ignore:
	- 'dr-render-manual'

	env:
	# Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
	BUILD_TYPE: Debug

	jobs:
	build:
	# The CMake configure and build commands are platform agnostic and should work equally
	# well on Windows or Mac. You can convert this to a matrix build if you need
	# cross-platform coverage.
	# See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Install packages
	shell: bash
	run: \|
	sudo apt-get update
	sudo apt-get install codespell libpulse-dev libspeexdsp-dev libsamplerate0-dev sox git libwxgtk3.0-gtk3-dev portaudio19-dev libhamlib-dev libasound2-dev libao-dev libgsm1-dev libsndfile-dev

	- name: Spellcheck codebase
	shell: bash
	run: codespell --ignore-words-list=inout,nin,ontop,parm,tthe,ue `find src -name '.c' -o -name '.h' -o -name '.mm'`

	- name: Build freedv-gui using PortAudio
	shell: bash
	working-directory: ${{github.workspace}}
	run: UT_ENABLE=1 ./build_linux.sh portaudio

	- name: Build freedv-gui using PulseAudio
	shell: bash
	working-directory: ${{github.workspace}}
	run: UT_ENABLE=1 ./build_linux.sh pulseaudio

	- name: Execute unit tests
	shell: bash
	working-directory: ${{github.workspace}}/build_linux
	run: make test

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