refactor(scripts): use /usr/bin/env bash for portability #42

	#
	# EFI Boot Guard
	#
	# Copyright (c) Siemens AG, 2021-2023
	#
	# Authors:
	# Claudius Heine <[email protected]>
	# Jan Kiszka <[email protected]>
	#
	# This work is licensed under the terms of the GNU GPL, version 2. See
	# the COPYING file in the top-level directory.
	#
	# SPDX-License-Identifier: GPL-2.0
	#

	name: Coverity Scan

	on:
	push:
	branches:
	- coverity_scan

	jobs:
	build:
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout
	uses: actions/checkout@v3
	with:
	submodules: recursive

	- name: Install amd64 dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install --no-install-recommends \
	autoconf-archive gcc-multilib gnu-efi libpci-dev check
	- name: Install Coverity
	run: \|
	wget https://scan.coverity.com/download/cxx/linux64 \
	--post-data "token=$COVERITY_TOKEN&project=siemens%2Fefibootguard" \
	-O coverity_tool.tar.gz
	tar -xf coverity_tool.tar.gz

	- name: Prepare build
	run: \|
	autoreconf -fi
	mkdir -p build

	- name: Build for Coverity
	run: \|
	cd build
	../configure
	../cov-analysis-linux64-*/bin/cov-build --dir cov-int make -j $(nproc)

	- name: Submit Coverity results
	run: \|
	cd build
	tar caf ebg-scan.tar.bz2 cov-int
	curl --form token=$COVERITY_TOKEN \
	--form email=$COVERITY_EMAIL \
	--form [email protected] \
	--form version="${{ github.sha }}" \
	--form description="EFI Boot Guard Coverity Scan" \
	https://scan.coverity.com/builds?project=siemens%2Fefibootguard
	env:
	COVERITY_TOKEN: ${{ secrets.COVERITY_TOKEN }}
	COVERITY_EMAIL: ${{ secrets.COVERITY_EMAIL }}

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