# Lab: Container-Supported Development


Use containers to run the services your app depends on — databases, caches,
message queues — without installing anything locally. This lab walks through
running PostgreSQL in a container, writing a `compose.yaml` your whole team
can share, and adding a pgAdmin visualizer to the dev stack.

## Launch the lab













<ol>
<li>
<p>Start the labspace:</p>
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  <div class="relative w-full">
    
    
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          class="icon-svg hidden"
          ><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true" data-slot="icon">
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        >
        <span :class="{ 'group-hover:block' : copying }" class="icon-svg hidden"
          ><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true" data-slot="icon">
  <path fill-rule="evenodd" d="M2.25 12c0-5.385 4.365-9.75 9.75-9.75s9.75 4.365 9.75 9.75-4.365 9.75-9.75 9.75S2.25 17.385 2.25 12Zm13.36-1.814a.75.75 0 1 0-1.22-.872l-3.236 4.53L9.53 12.22a.75.75 0 0 0-1.06 1.06l2.25 2.25a.75.75 0 0 0 1.14-.094l3.75-5.25Z" clip-rule="evenodd"/>
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        <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-console" data-lang="console"><span class="line"><span class="cl"><span class="gp">$</span> docker compose -p labspace -f oci://dockersamples/labspace-container-supported-development up -d
</span></span></code></pre></div>
      
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</li>
<li>
<p>Open your browser to <a class="link" href="http://localhost:3030" rel="noopener">http://localhost:3030</a>.</p>
</li>
<li>
<p>When you're done, tear down the labspace:</p>
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  x-ref="root"
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>
  
  <div class="relative w-full">
    
    
    <div class="syntax-light dark:syntax-dark not-prose w-full">
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        class="
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        title="copy"
        @click="window.navigator.clipboard.writeText(atob(code).replaceAll(/^[\$>]\s+/gm, ''));
      copying = true;
      setTimeout(() => copying = false, 2000);"
      >
        <span
          :class="{ 'group-hover:block' : !copying }"
          class="icon-svg hidden"
          ><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true" data-slot="icon">
  <path d="M7.5 3.375c0-1.036.84-1.875 1.875-1.875h.375a3.75 3.75 0 0 1 3.75 3.75v1.875C13.5 8.161 14.34 9 15.375 9h1.875A3.75 3.75 0 0 1 21 12.75v3.375C21 17.16 20.16 18 19.125 18h-9.75A1.875 1.875 0 0 1 7.5 16.125V3.375Z"/>
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</svg>
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        >
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          ><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true" data-slot="icon">
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        >
      </button>
      
        <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-console" data-lang="console"><span class="line"><span class="cl"><span class="gp">$</span> docker compose -p labspace down
</span></span></code></pre></div>
      
    </div>
  </div>
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</li>
</ol>



## What you'll learn

By the end of this Labspace, you will have completed the following:

- Run a PostgreSQL database in a container with no local installation
- Use bind mounts to seed a database with schema and initial data at startup
- Write a `compose.yaml` that codifies the entire dev stack for the team
- Add a pgAdmin container to visualize and inspect the database
- Understand how containerized dev stacks reduce onboarding time and environment drift

## Modules

| #   | Module                           | Description                                                                     |
| --- | -------------------------------- | ------------------------------------------------------------------------------- |
| 1   | Introduction                     | Meet the sample app and understand the container-supported development approach |
| 2   | Running a Containerized Database | Start PostgreSQL, connect the app, and seed the database using bind mounts      |
| 3   | Making Life Easier with Compose  | Replace `docker run` commands with a shared `compose.yaml`                      |
| 4   | Adding Dev Tools                 | Add pgAdmin to the Compose stack for database visualization                     |
| 5   | Recap                            | Review key takeaways and explore related guides                                 |

