KASM-6904 Alpine: update 3.21 pipeline to build apk

alpine/kasmvncserver/APKBUILD

@@ -56,7 +56,8 @@ builddir="$srcdir/"
 
 
 build() {
-	tar -xzf ../kasmvnc.alpine_321_x86_64.tgz -C "$srcdir";
+  local alpine_version=$(cat /etc/alpine-release | awk -F. '{ print $1$2 }')
+	tar -xzf "/src/builder/build/kasmvnc.alpine_$alpine_version.tar.gz" -C "$srcdir";
 }
 
 check() {

builder/build-apk

@@ -12,6 +12,8 @@ docker build -t kasmvnc_apkbuilder_${os}:${os_codename} -f \
 source_dir=$(echo $PWD)
 L_UID=$(id -u)
 L_GID=$(id -g)
+ABUILD_GID=300
 docker run --rm -v "$source_dir":/src --user $L_UID:$L_GID \
+  --group-add $ABUILD_GID \
   kasmvnc_apkbuilder_${os}:${os_codename} /bin/bash -c \
   '/src/builder/build-apk-inside-docker'

builder/build-apk-inside-docker

@@ -4,8 +4,10 @@ set -e
 
 os=alpine
 os_codename=$(cat /etc/os-release | awk '/VERSION_ID/' | grep -o '[[:digit:]]' | tr -d '\n' | head -c 3)
+apkbuild_dir=/src/alpine/kasmvncserver/
+
+cd "$apkbuild_dir" && abuild -r
 
 mkdir -p /src/builder/build/${os}_${os_codename}
 mv \
-  /src/builder/build/kasmvnc.${os}_${os_codename}.tar.gz \
-  /src/builder/build/${os}_${os_codename}/kasmvnc.${os}_${os_codename}_$(uname -m).tgz
+  /src/alpine/packages/alpine/x86_64/*.apk /src/builder/build/${os}_${os_codename}/

builder/dockerfile.alpine_321.apk.build

@@ -1,6 +1,12 @@
 FROM alpine:3.21
 
 RUN apk add shadow bash
+RUN apk add abuild sudo less
+
+ENV HOME /src/alpine
+WORKDIR $HOME/kasmvncserver
+
+COPY alpine/.abuild/*.pub /etc/apk/keys/
 
 RUN useradd -m docker && echo "docker:docker" | chpasswd