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 = 'rust:1.70';
 
 local archs = [
   { target: 'aarch64-unknown-linux-musl', short: 'arm64-musl' },
@@ -12,26 +12,32 @@ 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,
+      'rustup target add ' + arch.target,
+      'scripts/prepare-build.sh',
+      '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'],
+    volumes: [{
+      name: getVolumeName(arch),
+      path: '/drone/src/target',
+    }],
   }
   for arch in archs
 ];
@@ -46,10 +52,11 @@ local add_build_steps() = [
   steps:
     [{
       name: 'Wait for Docker',
-      image: cross_image,
+      image: build_image,
       commands: [
         'mkdir artifacts',
-        'echo Using image: ' + cross_image,
+        '/usr/bin/env bash -c "pushd $(mktemp -d) && wget -nv https://download.docker.com/linux/debian/dists/bullseye/pool/stable/amd64/docker-ce-cli_24.0.2-1~debian.11~bullseye_amd64.deb -O docker-ce.dpkg && dpkg -i docker-ce.dpkg && popd"',
+        'echo Using image: ' + build_image,
         'while ! docker image ls; do sleep 1; done',
         'cargo --version',
         'rustc --version',
@@ -68,7 +75,7 @@ local add_build_steps() = [
     [
       {
         name: 'Show built artifacts',
-        image: cross_image,
+        image: build_image,
         commands: [
           'ls -lah artifacts',
         ],
@@ -109,11 +116,12 @@ local add_build_steps() = [
   }],
 
   volumes: [
-    {
-      name: 'dockersock',
-      temp: {},
-    },
-  ],
+             {
+               name: 'dockersock',
+               temp: {},
+             },
+           ]
+           + getLocalVolumes(archs),
 
   image_pull_secrets: ['docker_private_repo'],
 }

scripts/prepare-build.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -x
+apt-get update && apt-get install -y jq curl
+
+pushd $(mktemp -d)
+
+# Install minisign
+wget -nv https://github.com/jedisct1/minisign/releases/download/0.11/minisign-0.11-linux.tar.gz -O - | tar --strip-components 2 -C /usr/local/bin/ -vxzf - minisign-linux/x86_64/minisign
+
+# Installing zig, checking its validity
+mkdir -p /usr/local/bin
+wget -nv https://ziglang.org/download/index.json -O zig-versions.json
+
+echo "$(jq -r '.master."x86_64-linux".shasum' zig-versions.json) zig.tar.xz" > zig.tar.xz.shasum
+wget -nv -c $(jq -r '.master."x86_64-linux".tarball' zig-versions.json) -O zig.tar.xz
+wget -nv -c "$(jq -r '.master."x86_64-linux".tarball' zig-versions.json).minisig" -O zig.tar.xz.minisig
+sha256sum -c zig.tar.xz.shasum
+
+if [ $? -ne 0 ]; then
+  echo "Error in SHA256 hash!"
+  exit 1
+else
+  echo "SHA256 hash OK"
+fi
+
+minisign -P 'RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U' -Vm zig.tar.xz
+
+if [ $? -ne 0 ]; then
+  echo "Error in signature!"
+  exit 1
+else
+  echo "Signature OK"
+fi
+
+tar -C /usr/local/bin --strip-components 1 -xf zig.tar.xz
+
+rm -rf zig*
+
+# Installing binstall and zigbuild
+curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
+cargo binstall -y cargo-zigbuild
+
+popd