Remove heroku-20 (#136)

* Drop support for heroku-20

GUS-W-18769381

* clean up stacks/versions table, now with links

* Nginx/1.28.0 and other version updates (#138)

* Update Nginx to 1.28.0

GUS-W-18226846

* Update headers-more-nginx-module to 0.38

* rebuild nginx with new versions for all stacks

* Update Ruby to 3.2.8

GUS-W-18226846

Author: dzuelke

Makefile

@@ -1,8 +1,4 @@
-build: build-heroku-20 build-heroku-22 build-heroku-24
-
-build-heroku-20:
-	@echo "Building nginx in Docker for heroku-20..."
-	@docker run -v $(shell pwd):/buildpack --rm -it -e "STACK=heroku-20" -w /buildpack heroku/heroku:20-build scripts/build_nginx /buildpack/nginx-heroku-20.tgz
+build: build-heroku-22 build-heroku-24
 
 build-heroku-22:
 	@echo "Building nginx in Docker for heroku-22..."

bin/compile

@@ -10,8 +10,8 @@ BUILD_DIR=$1
 CACHE_DIR=$2
 BUILDPACK_DIR="$(dirname "$(dirname "$0")")"
 
-ruby_version="3.2.4"
-if [[ $STACK == heroku-2[02] ]]; then
+ruby_version="3.2.8"
+if [[ $STACK == "heroku-22" ]]; then
 	nginx_tarball=nginx-${STACK}.tgz
 	ruby_tarball=${STACK}/ruby-${ruby_version}.tgz
 else

changelog.md

@@ -5,6 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [unreleased] - YYYY-MM-DD
+### Changes
+- Drop support for heroku-20
+- Update Nginx to 1.28.0
+- Update headers-more-nginx-module to 0.38
+- Update Ruby to 3.2.8
 
 ## [1.13] - 2024-08-30
 ### Changes

nginx-heroku-20.tgz

@@ -17,11 +17,10 @@ Nginx-buildpack installs & runs the [Nginx web server](https://nginx.org/) insid
 
 These are auto-selected based on the app's stack at build time.
 
-| Heroku Stack | Nginx Version | PCRE version |
+| [Heroku Stack](https://devcenter.heroku.com/articles/stack) | Nginx Version | PCRE version |
 |--------------|--------------:|-------------:|
-| `Heroku-20` | `1.26.2` | PCRE1 (8.x) |
-| `Heroku-22` | `1.26.2` | PCRE1 (8.x) |
-| `Heroku-24` | `1.26.2` | PCRE2 (10.x) |
+| [Heroku-22](https://devcenter.heroku.com/articles/heroku-22-stack) | 1.28.0 | PCRE1 (8.x) |
+| [Heroku-24](https://devcenter.heroku.com/articles/heroku-24-stack) | 1.28.0 | PCRE2 (10.x) |
 
 ## Presets
 

nginx-heroku-22.tgz

@@ -9,8 +9,8 @@ set -o pipefail
 # fail harder
 set -eu
 
-NGINX_VERSION=${NGINX_VERSION-1.26.2}
-HEADERS_MORE_VERSION=${HEADERS_MORE_VERSION-0.37}
+NGINX_VERSION=${NGINX_VERSION-1.28.0}
+HEADERS_MORE_VERSION=${HEADERS_MORE_VERSION-0.38}
 UUID4_VERSION=${UUID4_VERSION-f8f7ff44e6a8c6cf75232ae4b63d011f2f3b34c1}
 
 nginx_tarball_url=https://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz
@@ -39,7 +39,7 @@ configure_opts=(
   --add-module="${temp_dir}/nginx-${NGINX_VERSION}/headers-more-nginx-module-${HEADERS_MORE_VERSION}"
   --add-module="${temp_dir}/nginx-${NGINX_VERSION}/nginx-uuid4-module-${UUID4_VERSION}"
 )
-if [[ $STACK == heroku-2[02] ]]; then
+if [[ $STACK == "heroku-22" ]]; then
   # we used to build our own PCRE 8.x, and when moving to dynamic linking, we had to ensure all existing regexes in config files continued to work, so we enforced libpcre3 (8.x) usage instead of the newer PCRE2 (10.x), which has stricter validation for certain patterns (example: /[\w-.]/ is not allowed in PCRE2)
   # but for any newer stacks, we can use the more modern PCRE2
   configure_opts+=(