Improve security advisory guidelines

Author: alessfg

.github/SECURITY.md

@@ -2,7 +2,7 @@
 
 ## Reporting a Vulnerability
 
-If you find a security vulnerability that directly affects the Docker NGINX Unprivileged image we encourage you open an issue detailing the security vulnerability. Do note that only vulnerabilities related to direct NGINX library dependencies will be considered. For reference, these are:
+If you find a security vulnerability that directly affects the Docker NGINX Unprivileged image we encourage you open an issue detailing the security vulnerability. **Do note that only vulnerabilities related to direct NGINX library dependencies will be considered. Other security vulnerabilities should be addressed by the weekly Monday night build and as such will be promptly closed.** For reference, the direct NGINX library dependencies are:
 
 * For Debian:
   * `libc6`

CONTRIBUTING.md

@@ -34,7 +34,7 @@ To report a bug, open an issue on GitHub with the label `bug` using the availabl
 
 ### Report a Security vulnerability
 
-To report a secuirty vulnerability, open an issue on GitHub with the label `security` using the available security report issue template. Please ensure the security vulnerability directly impacts one of the NGINX dependencies listed in the [`SECURITY`](https://github.com/nginxinc/docker-nginx-unprivileged/blob/main/.github/SECURITY.md) doc.
+To report a secuirty vulnerability, open an issue on GitHub with the label `security` using the available security report issue template. Please ensure the security vulnerability directly impacts one of the NGINX dependencies listed in the [`SECURITY`](https://github.com/nginxinc/docker-nginx-unprivileged/blob/main/.github/SECURITY.md) doc. Other security vulnerabilities should be addressed by the weekly Monday night build and as such will be promptly closed.
 
 ### Suggest a Feature or Enhancement
 

README.md

@@ -7,7 +7,7 @@ This Dockerfile creates an NGINX Docker image that runs NGINX as a non root, unp
 * The default NGINX PID has been moved from `/var/run/nginx.pid` to `/tmp/nginx.pid`.
 * Change `*_temp_path` variables to `/tmp/*`.
 
-Docker Hub images are built on a weekly basis for the `amd64`, `arm32v5` (for Debian), `arm32v6` (for Alpine), `arm32v7`, `arm64v8`, `i386`, `mips64le` (for Debian), `ppc64le` and `s390x` architectures and can be found at <https://hub.docker.com/r/nginxinc/nginx-unprivileged>.
+Docker Hub images are built and pushed on a weekly basis (every Monday night) for the `amd64`, `arm32v5` (for Debian), `arm32v6` (for Alpine), `arm32v7`, `arm64v8`, `i386`, `mips64le` (for Debian), `ppc64le` and `s390x` architectures and can be found at <https://hub.docker.com/r/nginxinc/nginx-unprivileged>.
 
 Check out the [docs](https://hub.docker.com/_/nginx) for the upstream Docker NGINX image for a detailed explanation of how to use this image.