1 files changed, 65 insertions, 0 deletions
diff --git a/DockerStep.zig b/DockerStep.zig
new file mode 100644
index 0000000..9673c09
--- /dev/null
+++ b/DockerStep.zig
@@ -0,0 +1,65 @@
+//! A zig builder step that runs "docker run ..."
+//! This is primarily meant to do integration tests.
+const DockerStep = @This();
+
+const std = @import("std");
+const Step = std.build.Step;
+const RunStep = std.build.RunStep;
+
+pub const Options = struct {
+    /// Container name
+    name: []const u8,
+
+    /// The name of the image to run
+    image: []const u8,
+
+    /// The ports to expose
+    ports: []const []const u8,
+};
+
+step: *Step,
+
+pub fn create(b: *std.Build, opts: Options) *DockerStep {
+    const self = b.allocator.create(DockerStep) catch @panic("OOM");
+
+    const run_delete = remove(b, opts.name);
+
+    const run_create = run: {
+        const run = RunStep.create(b, b.fmt("docker run {s}", .{opts.name}));
+        run.has_side_effects = true;
+        run.addArgs(&.{
+            "docker",
+            "run",
+            "-d",
+            "--rm",
+            "--name",
+            opts.name,
+        });
+        for (opts.ports) |p| run.addArgs(&.{ "-p", p });
+        run.addArg(opts.image);
+        break :run run;
+    };
+
+    run_create.step.dependOn(run_delete.step);
+
+    self.* = .{
+        .step = &run_create.step,
+    };
+    return self;
+}
+
+pub fn remove(b: *std.Build, name: []const u8) *DockerStep {
+    const self = b.allocator.create(DockerStep) catch @panic("OOM");
+
+    const run_delete = run: {
+        const run = RunStep.create(b, b.fmt("docker rm {s}", .{name}));
+        run.has_side_effects = true;
+        run.addArgs(&.{ "docker", "rm", name, "-f" });
+        break :run run;
+    };
+
+    self.* = .{
+        .step = &run_delete.step,
+    };
+    return self;
+}