<p></p>
<p><b>@mmd-osm</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/2409#discussion_r549471542">docker-compose.yml</a>:</p>
<pre style='color:#555'>> @@ -0,0 +1,30 @@
+version: "3"
+
+services:
+  web:
+    build:
+      context: .
+    volumes:
+      - .:/app
+      # don't mount tmp directory (https://github.com/Shopify/bootsnap/issues/177)
+      - /app/tmp
+    ports:
+      - "3000:3000"
+    environment:
+      # https://github.com/Shopify/bootsnap/issues/262
+      ENABLE_BOOTSNAP: 'false'
</pre>
<p>In the Github issue you've linked to, they also replaced one line in a file named  <code>config/boot.rb</code>:</p>
<p>On my local box, there's one line to load the bootsnap/setup module, which is used to speed up Rails application loading:</p>
<pre><code>require "bootsnap/setup" # Speed up boot time by caching expensive operations.
</code></pre>
<p>They replace that line by making the loading process depend  on your new environment variable ENABLE_BOOTSNAP:</p>
<pre><code>require 'bootsnap/setup' if ENV.fetch("ENABLE_BOOTSNAP", "true") == "true"
</code></pre>

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