Restore 2.0 (not yet EOL)

Author: tianon

2.0/Dockerfile

@@ -0,0 +1,17 @@
+#!/bin/sh
+set -e
+
+# first arg is `-f` or `--some-option`
+if [ "${1#-}" != "$1" ]; then
+	set -- haproxy "$@"
+fi
+
+if [ "$1" = 'haproxy' ]; then
+	shift # "haproxy"
+	# if the user wants "haproxy", let's add a couple useful flags
+	#   -W  -- "master-worker mode" (similar to the old "haproxy-systemd-wrapper"; allows for reload via "SIGUSR2")
+	#   -db -- disables background mode
+	set -- haproxy -W -db "$@"
+fi
+
+exec "$@"

2.0/docker-entrypoint.sh

@@ -59,7 +59,7 @@ ENV HAPROXY_SHA256 {{ .sha256 }}
 		# Since 5.4 is supported on haproxy, better use it now, but only for
 		# newer versions since there could be some minor incompatibilities
 		# for existing scripts: https://www.lua.org/manual/5.4/manual.html#8
-		if ([ "2.2", "2.4", "2.6", "2.8" ] | index(env.version)) then
+		if ([ "2.0", "2.2", "2.4", "2.6", "2.8" ] | index(env.version)) then
 			"5.3"
 		else
 			"5.4"
@@ -81,7 +81,7 @@ RUN set -eux; \
 		pcre2-dev \
 		readline-dev \
 		tar \
-{{ if ([ "2.2" ] | index(env.version)) then ( -}}
+{{ if ([ "2.0", "2.2" ] | index(env.version)) then ( -}}
 		zlib-dev \
 {{ ) else "" end -}}
 	; \
@@ -95,7 +95,7 @@ RUN set -eux; \
 		libssl-dev \
 		make \
 		wget \
-{{ if ([ "2.2" ] | index(env.version)) then ( -}}
+{{ if ([ "2.0", "2.2" ] | index(env.version)) then ( -}}
 		zlib1g-dev \
 {{ ) else "" end -}}
 	; \
@@ -110,7 +110,7 @@ RUN set -eux; \
 	\
 {{
 	def haproxy_target:
-		if env.variant == "alpine" then
+		if env.variant == "alpine" and env.version != "2.0" then
 			"linux-musl"
 		else
 			"linux-glibc"
@@ -122,15 +122,15 @@ RUN set -eux; \
 		USE_LUA=1 LUA_INC=/usr/include/lua{{ lua }}{{ if env.variant == "alpine" then (" LUA_LIB=/usr/lib/lua" + lua) else "" end }} \
 		USE_OPENSSL=1 \
 		USE_PCRE2=1 USE_PCRE2_JIT=1 \
-{{ if ([ "2.2" ] | index(env.version)) then ( -}}
+{{ if ([ "2.0", "2.2" ] | index(env.version)) then ( -}}
 		USE_ZLIB=1 \
 {{ ) else "" end -}}
-{{ if ([ "2.2" ] | index(env.version) | not) then ( -}}
+{{ if ([ "2.0", "2.2" ] | index(env.version) | not) then ( -}}
 		USE_PROMEX=1 \
 {{ ) else "" end -}}
 		\
 		EXTRA_OBJS=" \
-{{ if [ "2.2" ] | index(env.version) then ( -}}
+{{ if [ "2.0", "2.2" ] | index(env.version) then ( -}}
 # see https://github.com/docker-library/haproxy/issues/94#issuecomment-505673353 for more details about prometheus support
 			contrib/prometheus-exporter/service-prometheus.o \
 {{ ) else "" end -}}
@@ -188,18 +188,18 @@ RUN set -eux; \
 STOPSIGNAL SIGUSR1
 
 COPY docker-entrypoint.sh /usr/local/bin/
-{{ if [ "2.2" ] | index(env.version) then ( -}}
+{{ if [ "2.0", "2.2" ] | index(env.version) then ( -}}
 RUN ln -s usr/local/bin/docker-entrypoint.sh / # backwards compat
 {{ ) else "" end -}}
 ENTRYPOINT ["docker-entrypoint.sh"]
 
-{{ if [ "2.2" ] | index(env.version) then ( -}}
+{{ if [ "2.0", "2.2" ] | index(env.version) then ( -}}
 # no USER for backwards compatibility (to try to avoid breaking existing users)
 {{ ) else ( -}}
 USER haproxy
 {{ ) end -}}
 
-{{ if [ "2.2", "2.4", "2.6" ] | index(env.version) then ( -}}
+{{ if [ "2.0", "2.2", "2.4", "2.6" ] | index(env.version) then ( -}}
 # no WORKDIR for backwards compatibility (to try to avoid breaking existing users)
 {{ ) else ( -}}
 # https://github.com/docker-library/haproxy/issues/200

Dockerfile.template

@@ -28,21 +28,26 @@ generated_warning() {
 }
 
 for version; do
+	rm -rf "$version/"
+
 	for variant in '' alpine; do
-		# 2.2 can't be built on Alpine greater than 3.16
+		# 2.0, 2.2 can't be built on Alpine greater than 3.16
 		# OpenSSL 3 incompatibilities (https://github.com/haproxy/haproxy/issues/1276)
 		# but Alpine 3.16 is end of life
-		if [ "$version" = '2.2' ] && [ "$variant" = 'alpine' ]; then
+		if { [ "$version" = '2.0' ] || [ "$version" = '2.2' ]; } && [ "$variant" = 'alpine' ]; then
 			continue
 		fi
 		export version variant
 		dir="$version${variant:+/$variant}"
 
 		echo "processing $dir ..."
+		mkdir -p "$dir"
 
 		{
 			generated_warning
 			gawk -f "$jqt" Dockerfile.template
 		} > "$dir/Dockerfile"
+
+		cp -a docker-entrypoint.sh "$dir/"
 	done
 done

apply-templates.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+set -e
+
+# first arg is `-f` or `--some-option`
+if [ "${1#-}" != "$1" ]; then
+	set -- haproxy "$@"
+fi
+
+if [ "$1" = 'haproxy' ]; then
+	shift # "haproxy"
+	# if the user wants "haproxy", let's add a couple useful flags
+	#   -W  -- "master-worker mode" (similar to the old "haproxy-systemd-wrapper"; allows for reload via "SIGUSR2")
+	#   -db -- disables background mode
+	set -- haproxy -W -db "$@"
+fi
+
+exec "$@"

docker-entrypoint.sh

@@ -92,7 +92,7 @@ for version; do
 		export variant
 		dir="$version${variant:+/$variant}"
 		if [ ! -d "$dir" ]; then
-			# 2.2 can't be built on supported Alpine release, so it has no Alpine
+			# 2.0, 2.2 can't be built on a supported Alpine release
 			continue
 		fi
 

generate-stackbrew-library.sh

@@ -1,4 +1,10 @@
 {
+  "2.0": {
+    "debian": "buster-slim",
+    "sha256": "95334c52ace9ae139e66d60240633be8bb4eed1babedfcc6cb947092e00c447c",
+    "url": "https://www.haproxy.org/download/2.0/src/haproxy-2.0.35.tar.gz",
+    "version": "2.0.35"
+  },
   "2.2": {
     "debian": "bullseye-slim",
     "sha256": "24f9eec04ee8d9e3652370be3db9852dec8aa650b3c8eeae969300c86b6fda5b",

versions.json

@@ -15,6 +15,7 @@ versions=( "${versions[@]%/}" )
 defaultDebianSuite='bookworm-slim'
 declare -A debianSuite=(
 	[2.2]='bullseye-slim'
+	[2.0]='buster-slim'
 )
 defaultAlpineVersion='3.20'
 declare -A alpineVersion=(
@@ -36,8 +37,8 @@ for version in "${versions[@]}"; do
 				debian: env.debian,
 				alpine: env.alpine,
 			}
-			# remove Alpine from 2.2 since it cannot be built on any active Alpine release
-			| if env.version == "2.2" then del(.alpine) else . end
+			# remove Alpine from versions where it cannot be built on any active Alpine release
+			| if [ "2.0", "2.2" ] | index(env.version) then del(.alpine) else . end
 		'
 	)"