build and push Docker image

lib/mix/tasks/labelmaker.release.ex

@@ -0,0 +1,29 @@
+defmodule Mix.Tasks.Labelmaker.Release do
+  use Mix.Task
+
+  @shortdoc "Builds and releases the labelmaker Docker image"
+
+  def run(_args) do
+    cmd = "docker"
+
+    args = [
+      "buildx",
+      "build",
+      "--platform",
+      "linux/amd64",
+      "-t",
+      "192.168.0.2:5000/labelmaker",
+      "--push",
+      "."
+    ]
+
+    IO.puts("Running Docker build and push...")
+
+    {_output, exit_code} =
+      System.cmd(cmd, args, into: IO.stream(:stdio, :line), stderr_to_stdout: true)
+
+    if exit_code != 0 do
+      Mix.raise("Docker buildx failed with exit code #{exit_code}")
+    end
+  end
+end