Update build toolchain

It now uses cargo zigbuild instead of cross, with a prebuilt image.

Update build to use zigbuild instead of cross

Signed-off-by: Jacob Kiers <code@kiers.eu>

.drone.jsonnet

@@ -1,5 +1,5 @@
 local executableName = 'newsletter-to-web';
-local cross_image = 'img.kie.rs/jjkiers/rust-dind-cross:1.66-full';
+local build_image = 'img.kie.rs/jjkiers/rust-crossbuild:rust1.79.0-zig0.11.0-zig';
 
 local archs = [
   { target: 'aarch64-unknown-linux-musl', short: 'arm64-musl' },
@@ -12,26 +12,30 @@ local getStepName(arch) = 'Build for ' + arch.short;
 local builtExecutableName(arch) = executableName + if std.length(std.findSubstr(arch.short, 'windows')) > 0 then '.exe' else '';
 local targetExecutableName(arch) = executableName + '-' + arch.target + if std.length(std.findSubstr(arch.short, 'windows')) > 0 then '.exe' else '';
 
+local getVolumeName(arch) = 'target-' + arch.target;
+local getLocalVolumes(arch) = [
+  {
+    name: getVolumeName(arch),
+    temp: {},
+  }
+  for arch in archs
+];
+
 local add_build_steps() = [
   {
     name: getStepName(arch),
-    image: cross_image,
-    volumes: [
-      {
-        name: 'dockersock',
-        path: '/var/run',
-      },
-    ],
+    image: build_image,
     commands: [
       'echo Hello World from Jsonnet on ' + arch.target + '!',
-      'cross build --release --target ' + arch.target,
+      'cargo zigbuild --release --target ' + arch.target,
       'cp target/' + arch.target + '/release/' + builtExecutableName(arch) + ' artifacts/' + targetExecutableName(arch),
       'rm -rf target/' + arch.target + '/release/*',
     ],
-    environment: {
-      CROSS_REMOTE: true,
-    },
-    depends_on: ['Wait for Docker'],
+    depends_on: ['Prepare'],
+    volumes: [{
+      name: getVolumeName(arch),
+      path: '/drone/src/target',
+    }],
   }
   for arch in archs
 ];
@@ -45,30 +49,20 @@ local add_build_steps() = [
   },
   steps:
     [{
-      name: 'Wait for Docker',
-      image: cross_image,
+      name: 'Prepare',
+      image: build_image,
       commands: [
         'mkdir artifacts',
-        'echo Using image: ' + cross_image,
-        'while ! docker image ls; do sleep 1; done',
+        'echo Using image: ' + build_image,
         'cargo --version',
         'rustc --version',
-        'docker info',
-        'docker pull hello-world:latest',
       ],
-      environment: {
-        CROSS_REMOTE: true,
-      },
-      volumes: [{
-        name: 'dockersock',
-        path: '/var/run',
-      }],
     }] +
     add_build_steps() +
     [
       {
         name: 'Show built artifacts',
-        image: cross_image,
+        image: build_image,
         commands: [
           'ls -lah artifacts',
         ],
@@ -92,28 +86,7 @@ local add_build_steps() = [
       },
     ],
 
-  services: [{
-    name: 'docker',
-    image: 'docker:dind',
-    privileged: true,
-    volumes: [
-      {
-        name: 'dockersock',
-        path: '/var/run',
-      },
-      {
-        name: 'docker-storage',
-        path: '/var/lib/docker',
-      },
-    ],
-  }],
-
-  volumes: [
-    {
-      name: 'dockersock',
-      temp: {},
-    },
-  ],
+  volumes: getLocalVolumes(archs),
 
   image_pull_secrets: ['docker_private_repo'],
 }