Update to Alpine 3.9 (dropping Alpine 3.7)

This skips Ruby 2.3 since it doesn't support the OpenSSL version in Alpine 3.9, but it will be EOL soon anyhow (so it'll just stay on Alpine 3.7/3.8).

.travis.yml

@@ -4,18 +4,18 @@ services: docker
 env:
   - VERSION=2.6 VARIANT=stretch
   - VERSION=2.6 VARIANT=stretch/slim
+  - VERSION=2.6 VARIANT=alpine3.9
   - VERSION=2.6 VARIANT=alpine3.8
-  - VERSION=2.6 VARIANT=alpine3.7
   - VERSION=2.5 VARIANT=stretch
   - VERSION=2.5 VARIANT=stretch/slim
+  - VERSION=2.5 VARIANT=alpine3.9
   - VERSION=2.5 VARIANT=alpine3.8
-  - VERSION=2.5 VARIANT=alpine3.7
   - VERSION=2.4 VARIANT=stretch
   - VERSION=2.4 VARIANT=stretch/slim
   - VERSION=2.4 VARIANT=jessie
   - VERSION=2.4 VARIANT=jessie/slim
+  - VERSION=2.4 VARIANT=alpine3.9
   - VERSION=2.4 VARIANT=alpine3.8
-  - VERSION=2.4 VARIANT=alpine3.7
   - VERSION=2.3 VARIANT=stretch
   - VERSION=2.3 VARIANT=stretch/slim
   - VERSION=2.3 VARIANT=jessie

2.3/alpine3.7/Dockerfile

@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		libressl \
+		libressl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.3/alpine3.8/Dockerfile

@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		libressl \
+		libressl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.4/alpine3.8/Dockerfile

@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		libressl \
+		libressl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.4/alpine3.9/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.9
 
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		openssl \
+		openssl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.5/alpine3.8/Dockerfile

@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		libressl \
+		libressl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.5/alpine3.9/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.9
 
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		openssl \
+		openssl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.6/alpine3.8/Dockerfile

@@ -29,13 +29,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		libressl \
+		libressl-dev \
 		procps \
 		readline-dev \
 		ruby \

2.6/alpine3.9/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.9
 
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
@@ -29,13 +29,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		openssl \
+		openssl-dev \
 		procps \
 		readline-dev \
 		ruby \

Dockerfile-alpine.template

@@ -30,13 +30,13 @@ RUN set -ex \
 		glib-dev \
 		libc-dev \
 		libffi-dev \
-		libressl \
-		libressl-dev \
 		libxml2-dev \
 		libxslt-dev \
 		linux-headers \
 		make \
 		ncurses-dev \
+		openssl \
+		openssl-dev \
 		procps \
 		readline-dev \
 		ruby \

generate-stackbrew-library.sh

@@ -7,9 +7,9 @@ declare -A aliases=(
 )
 
 defaultDebianSuite='stretch'
-defaultAlpineVersion='3.8'
+defaultAlpineVersion='3.9'
 declare -A alpineVersion=(
-	#[2.5]='3.8'
+	[2.3]='3.8'
 )
 
 self="$(basename "$BASH_SOURCE")"
@@ -77,7 +77,7 @@ join() {
 for version in "${versions[@]}"; do
 	for v in \
 		{stretch,jessie}{,/slim} \
-		alpine{3.8,3.7,3.6} \
+		alpine{3.9,3.8,3.7} \
 	; do
 		dir="$version/$v"
 		variant="$(basename "$v")"

update.sh

@@ -70,7 +70,7 @@ for version in "${versions[@]}"; do
 	echo "$version: $fullVersion; $shaVal"
 
 	for v in \
-		alpine{3.6,3.7,3.8} \
+		alpine{3.7,3.8,3.9} \
 		{jessie,stretch}{/slim,} \
 	; do
 		dir="$version/$v"
@@ -104,6 +104,13 @@ for version in "${versions[@]}"; do
 			-e 's/^(FROM (debian|buildpack-deps|alpine)):.*/\1:'"$tag"'/' \
 			"$template" > "$dir/Dockerfile"
 
+		case "$variant" in
+			alpine3.8 | alpine3.7)
+				# Alpine 3.9+ uses OpenSSL, but 3.8/3.7 still uses LibreSSL
+				sed -ri -e 's/openssl/libressl/g' "$dir/Dockerfile"
+				;;
+		esac
+
 		if [ -n "${newEnoughRubygems[$version]:-}" ]; then
 			sed -ri -e '/RUBYGEMS_VERSION/d' "$dir/Dockerfile"
 		fi