Fully remove docker-in-docker and cross

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

.drone.jsonnet

@@ -12,6 +12,8 @@ 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 rustupAddTarget(arch) = 'rustup target add' + arch.target;
+
 local add_build_steps() = [
   {
     name: getStepName(arch),
@@ -26,11 +28,11 @@ local add_build_steps() = [
       'echo Hello World from Jsonnet on ' + arch.target + '!',
       'rustup target add ' + arch.target,
       'scripts/prepare-build.sh',
-      'cross zigbuild --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/*',
     ],
-    depends_on: ['Wait for Docker'],
+    depends_on: ['Prepare'],
   }
   for arch in archs
 ];
@@ -44,24 +46,10 @@ local add_build_steps() = [
   },
   steps:
     [{
-      name: 'Wait for Docker',
+      name: 'Prepare',
       image: build_image,
-      commands: [
-        'mkdir artifacts',
-        'echo Using image: ' + build_image,
-        'while ! docker image ls; do sleep 1; done',
-        'cargo --version',
-        'rustc --version',
-        'docker info',
-        'docker pull hello-world:latest',
-      ],
-      environment: {
-        CROSS_REMOTE: true,
-      },
-      volumes: [{
-        name: 'dockersock',
-        path: '/var/run',
-      }],
+      commands: ['scripts/prepare-build.sh'] +
+                [rustupAddTarget(a) for a in archs],
     }] +
     add_build_steps() +
     [
@@ -91,28 +79,5 @@ 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: {},
-    },
-  ],
-
   image_pull_secrets: ['docker_private_repo'],
 }