remove PGP checks

Author: githubcdr

Dockerfile

@@ -79,12 +79,6 @@ RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
 	&& cd /usr/src \
 	&& git clone --recursive https://github.com/eustas/ngx_brotli.git \
 	&& curl -fSL https://nginx.org/download/nginx-$NGINX_VERSION.tar.gz -o nginx.tar.gz \
-	&& curl -fSL https://nginx.org/download/nginx-$NGINX_VERSION.tar.gz.asc -o nginx.tar.gz.asc \
-        && sha512sum nginx.tar.gz nginx.tar.gz.asc \
-	&& export GNUPGHOME="$(mktemp -d)" \
-	&& gpg --keyserver ipv4.pool.sks-keyservers.net --recv-keys "$GPG_KEYS" \
-	&& gpg --batch --verify nginx.tar.gz.asc nginx.tar.gz \
-	&& rm -rf "$GNUPGHOME" nginx.tar.gz.asc \
 	&& mkdir -p /usr/src \
 	&& tar -zxC /usr/src -f nginx.tar.gz \
 	&& rm nginx.tar.gz \