Docker: Build and use musl-based binaries in alpine images to resolve glibc incompatibility issues (#19798)

* build: Install musl cross compilers as part of build Docker image
* build: Build also musl packages in scripts/build/build.sh
* scripts/build/build-all.sh: Build musl Linux targets
* build: Upgrade build-container to 1.2.11
* build.go: De-duplicate code
* build: Base Docker images on musl binaries

scripts/grunt/release_task.js

@@ -25,7 +25,7 @@ module.exports = function(grunt) {
       dest: '<%= tempDir %>/public/',
     });
     grunt.config('copy.backend_bin', {
-      cwd: 'bin/<%= platform %>-<%= arch %>',
+      cwd: 'bin/<%= platform %>-<%= arch %><%= libc ? "-" + libc : "" %>',
       expand: true,
       src: ['*'],
       options: { mode: true},