<p>I just ran through the complete process of running this Docker environment, to test the user experience of a random passerby who’d like to contribute an edit to the site. <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/jalessio/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/jalessio">@jalessio</a> walked me through setting up Docker-Compose, initializing a clean new database, importing data using Osmosis (from a small PBF extract), and verifying that everything worked at <code>localhost:3000</code>.</p>
<p>I made the smallest change I could think of: updating the header text in a way that was obviously visible (history/schmistory, etc.). Rails hot-reloaded everything, and I was able to see my change immediately:</p>
<p><a target="_blank" rel="noopener noreferrer" href="https://user-images.githubusercontent.com/58730/74597850-eb94f100-501a-11ea-8f2b-f49fd398cf57.png"><img width="1188" alt="Screen Shot 2020-02-15 at 5 44 50 PM" src="https://user-images.githubusercontent.com/58730/74597850-eb94f100-501a-11ea-8f2b-f49fd398cf57.png" style="max-width:100%;"></a></p>
<p>As a Rails novice who doesn't expect to become an expert, this has been a super useful way to understand the moving parts of the website and test potential changes. I can imagine helping a designer implement an idea here and test it out live, useful to getting new ideas into OSM.</p>
<p>I know that Docker configs can fall out of date over time, but as we’ve seen with <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="562230494" data-permission-text="Issue title is private" data-url="https://github.com/openstreetmap/chef/issues/266" data-hovercard-type="pull_request" data-hovercard-url="/openstreetmap/chef/pull/266/hovercard" href="https://github.com/openstreetmap/chef/pull/266">openstreetmap/chef#266</a> tests for this can be added to our Travis configuration and images can be published to Docker Hub where a casual developer can try them out.</p>

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