add patches for freenginx #37

	name: ngx_hidden_signature_patch
	on: ["push", "pull_request"]
	jobs:
	build_and_test:
	strategy:
	matrix:
	ngx: ['1.23.1', '1.22.0', '1.20.2', '1.18.0', '1.16.1', '1.14.2']
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	# Run build of the application
	- name: Run build - nginx ${{ matrix.ngx }}
	run: \|
	sudo apt update -y
	sudo apt install gcc g++ make patch curl git libpcre3-dev zlib1g-dev -y
	curl -ss -O https://nginx.org/download/nginx-${{ matrix.ngx }}.tar.gz
	tar xvzf nginx-${{ matrix.ngx }}.tar.gz
	cd nginx-${{ matrix.ngx }}

	patch -p0 < ../nginx-1.14.x-1.17.x-ngx_http_header_filter_module.c.patch
	patch -p0 < ../nginx-1.14.x-1.17.x-ngx_http_special_response.c.patch
	patch -p0 < ../nginx-1.14.x-1.17.x-ngx_http_v2_filter_module.c.patch

	./configure --prefix=/tmp/nginx/ ; make -j4 ; make install
	sudo /tmp/nginx/sbin/nginx

	CK_HEADER=$(curl -ss -I http://localhost/hello \| fgrep -i nginx \| wc -l)
	if [ "$CK_HEADER" -eq "1" ]; then
	exit 1
	fi

	CK_ERRBODY=$(curl -ss http://localhost/hello \| fgrep -i nginx \| wc -l)
	if [ "$CK_ERRBODY" -eq "1" ]; then
	exit 1
	fi

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