feat: update Dockerfile to use fixed user and enhance directory ownership; add push command to docker.py for DockerHub integration

src/cli_tools/docker.py

@@ -1,6 +1,7 @@
 """Docker image commands."""
 
 import os
+import subprocess
 
 import typer
 
@@ -10,6 +11,7 @@ app = typer.Typer(help="Build and manage Docker images.", no_args_is_help=True)
 
 DOCKER_IMAGE = "python-dev"
 DOCKER_DIR = "docker/python-dev"
+DOCKERHUB_IMAGE = "roxauto/python-dev"
 
 
 @app.command()
@@ -30,3 +32,20 @@ def build(
         f"{'--no-cache ' if no_cache else ''}"
         f"--network=host {DOCKER_DIR}",
     )
+
+
+@app.command()
+def push(tag: str = typer.Option("latest", help="Image tag.")):
+    """Tag and push the python-dev image to DockerHub."""
+    token = os.environ.get("DOCKERHUB_TOKEN")
+    if not token:
+        typer.echo("DOCKERHUB_TOKEN env variable is not set.", err=True)
+        raise typer.Exit(1)
+    subprocess.run(
+        ["docker", "login", "-u", "roxauto", "--password-stdin"],
+        input=token,
+        text=True,
+        check=True,
+    )
+    run(f"docker tag {DOCKER_IMAGE}:{tag} {DOCKERHUB_IMAGE}:{tag}")
+    run(f"docker push {DOCKERHUB_IMAGE}:{tag}")