Match docker template format with other examples

- Remove section headers
- Use inline code comments instead of prose
- Use sbx variable and sbx.kill() pattern
- Simplify template name to 'docker'

Author: beran-t

docs/template/examples/docker.mdx

@@ -3,11 +3,7 @@ title: "Docker"
 description: "Sandbox with Docker installed for running containers"
 ---
 
-Run Docker containers inside the E2B sandbox. Docker daemon is managed by systemd and starts automatically.
-
-## Install Docker
-
-Use the official installation script from [get.docker.com](https://get.docker.com) to set up Docker. The `hello-world` container validates that everything works.
+Run Docker containers inside the sandbox. Docker daemon is managed by systemd and starts automatically.
 
 <CodeGroup>
 ```typescript JavaScript & TypeScript
@@ -16,7 +12,9 @@ import { Template } from 'e2b'
 
 export const template = Template()
   .fromUbuntuImage('25.04')
+  // Install Docker using the official script
   .runCmd('curl -fsSL https://get.docker.com | sudo sh')
+  // Validate installation
   .runCmd('sudo docker run --rm hello-world')
 ```
 
@@ -27,23 +25,21 @@ from e2b import Template
 template = (
     Template()
     .from_ubuntu_image("25.04")
+    # Install Docker using the official script
     .run_cmd("curl -fsSL https://get.docker.com | sudo sh")
+    # Validate installation
     .run_cmd("sudo docker run --rm hello-world")
 )
 ```
 </CodeGroup>
 
-## Build and publish
-
-Build the template with enough resources for Docker operations.
-
 <CodeGroup>
 ```typescript JavaScript & TypeScript
 // build.ts
 import { Template, defaultBuildLogger } from 'e2b'
 import { template as dockerTemplate } from './template'
 
-await Template.build(dockerTemplate, 'e2b-docker-template', {
+Template.build(dockerTemplate, 'docker', {
   cpuCount: 2,
   memoryMB: 2048,
   onBuildLogs: defaultBuildLogger(),
@@ -55,34 +51,38 @@ await Template.build(dockerTemplate, 'e2b-docker-template', {
 from e2b import Template, default_build_logger
 from .template import template as dockerTemplate
 
-Template.build(dockerTemplate, 'e2b-docker-template',
+Template.build(dockerTemplate, 'docker',
     cpu_count=2,
     memory_mb=2048,
     on_build_logs=default_build_logger(),
 )
 ```
 </CodeGroup>
 
-## Run containers
-
-Spin up a sandbox and run any Docker image you need.
-
 <CodeGroup>
 ```typescript JavaScript & TypeScript
+// sandbox.ts
 import { Sandbox } from 'e2b'
 
-const sandbox = await Sandbox.create('e2b-docker-template', { timeoutMs: 60_000 })
+const sbx = await Sandbox.create('docker')
 
-const result = await sandbox.commands.run('sudo docker run --rm alpine echo "Hello from Alpine!"')
+// Run any Docker container
+const result = await sbx.commands.run('sudo docker run --rm alpine echo "Hello from Alpine!"')
 console.log(result.stdout)
+
+sbx.kill()
 ```
 
 ```python Python
+# sandbox.py
 from e2b import Sandbox
 
-sandbox = Sandbox.create('e2b-docker-template', timeout=60)
+sbx = Sandbox('docker')
 
-result = sandbox.commands.run('sudo docker run --rm alpine echo "Hello from Alpine!"')
+# Run any Docker container
+result = sbx.commands.run('sudo docker run --rm alpine echo "Hello from Alpine!"')
 print(result.stdout)
+
+sbx.kill()
 ```
 </CodeGroup>