Build with rust v1.66 and cross v0.2.4

Also added some sanity checks. The new docker image now also contains
all required targets and the rust-src component already, which makes it
a bit faster to get started.

Signed-off-by: Jacob Kiers <jacob@jacobkiers.net>

.cargo/config.toml

@@ -0,0 +1,3 @@
+[profile.release]
+lto = "thin"
+strip = true

.drone.jsonnet

@@ -1,4 +1,5 @@
 local executableName = 'newsletter-to-web';
+local cross_image = 'img.kie.rs/jjkiers/rust-dind-cross:1.66-full';
 
 local archs = [
   //  { target: 'aarch64-unknown-linux-gnu', short: 'arm64-gnu' },
@@ -16,16 +17,12 @@ local targetExecutableName(arch) = executableName + if std.startsWith(arch.short
 local add_build_steps() = [
   {
     name: getStepName(arch),
-    image: 'img.kie.rs/jjkiers/rust-dind-cross:1.62-slim',
+    image: cross_image,
     volumes: [
       {
         name: 'dockersock',
         path: '/var/run',
       },
-      {
-        name: 'rustup',
-        path: '/usr/local/rustup',
-      },
     ],
     commands: [
       'echo Hello World from Jsonnet on ' + arch.target + '!',
@@ -51,13 +48,19 @@ local add_build_steps() = [
   steps:
     [{
       name: 'Wait for Docker',
-      image: 'img.kie.rs/jjkiers/rust-dind-cross:1.65-slim',
+      image: cross_image,
       commands: [
+        'mkdir artifacts',
+        'echo Using image: ' + cross_image,
         'while ! docker image ls; do sleep 1; done',
+        'cargo --version',
+        'rustc --version',
         'docker info',
         'docker pull hello-world:latest',
-        'mkdir artifacts',
       ],
+      environment: {
+        CROSS_REMOTE: true,
+      },
       volumes: [{
         name: 'dockersock',
         path: '/var/run',
@@ -67,7 +70,7 @@ local add_build_steps() = [
     [
       {
         name: 'Show built artifacts',
-        image: 'img.kie.rs/jjkiers/rust-dind-cross:1.62-slim',
+        image: cross_image,
         commands: [
           'ls -lah artifacts',
         ],
@@ -112,18 +115,6 @@ local add_build_steps() = [
       name: 'dockersock',
       temp: {},
     },
-    {
-      name: 'docker-storage',
-      host: {
-        path: '/srv/drone/docker-dind-rust',
-      },
-    },
-    {
-      name: 'rustup',
-      host: {
-        path: '/srv/drone/rustup',
-      },
-    },
   ],
 
   image_pull_secrets: ['docker_private_repo'],