Merge remote-tracking branch 'origin/pr/577'

* origin/pr/577:
  Add Alpine (APK) Updates availability check

Author: marmarek

network/update-proxy-configs

@@ -139,6 +139,31 @@ EOF
 fi
 
 
+# APK (Aplinelinux) also
+if [ -e /etc/alpine-release ]; then
+    if [ -n "$PROXY_ADDR" ]; then
+        mkdir -p /run/qubes/bin
+        cat > /run/qubes/bin/apk <<EOF
+#!/bin/bash
+### This file is automatically generated by Qubes ($0 script).
+### All modifications here will be lost.
+http_proxy="$PROXY_ADDR" \\
+https_proxy="$PROXY_ADDR" \\
+/sbin/apk "\$@"
+EOF
+        chmod +x /run/qubes/bin/apk
+        cat > /etc/profile.d/qubes-proxy.sh << EOF
+### This file is automatically generated by Qubes ($0 script).
+### All modifications here will be lost.
+export PATH=/run/qubes/bin:\$PATH
+EOF
+    else
+        rm -f /run/qubes/bin/apk
+        rm -f /etc/profile.d/qubes-proxy.sh
+    fi
+fi
+
+
 # DNF configuration doesn't support including other files
 # https://bugzilla.redhat.com/show_bug.cgi?id=1352234
 if [ -e /etc/dnf/dnf.conf ]; then

package-managers/upgrades-installed-check

@@ -52,6 +52,16 @@ elif [ -e /etc/gentoo-release ]; then
     emerge_output="$(emerge -puDv @world 2>&1)"
     exit_code="$?"
     echo "$emerge_output" | grep -qF -- '[ebuild' && echo "false" || echo "true"
+elif [ -e /etc/alpine-release ]; then
+    ## Alpine and APK based distros
+    set -e
+    set -o pipefail
+    if ! $skip_refresh; then
+        sudo apk update -q >&2
+    fi
+    upgrades="$(apk list --upgradable)"
+    exit_code="$?"
+    [ -n "${upgrades}" ] && echo "false" || echo "true"
 else
     echo "Check not implemented for this distribution" >&2
     exit 1