cdn/Dockerfile

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+FROM httpd:2.4.61
+
+RUN apt-get update \
+    && apt-get install -y libcgi-pm-perl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY rwmap.pl /usr/local/bin/
+RUN chmod +x /usr/local/bin/rwmap.pl
+
+RUN echo "IncludeOptional conf.d/*.conf" >> conf/httpd.conf

cdn/rwmap.pl

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+#!/usr/bin/perl
+use strict;
+use warnings;
+use Digest::SHA qw(sha1_hex);
+# Desactiva el buffering de salida para que Apache pueda obtener la respuesta inmediatamente
+$| = 1;
+
+while (<STDIN>) {
+    chomp;
+    my $input = $_;
+    $input =~ /^\/image\/(.*)\/([a-z0-9-_]+)\.(png)$/;
+    my $collection = $1;
+    my $name = $2;
+    my $extension = $3;
+
+    my $sha1 = sha1_hex($name);
+    my $first = substr($sha1, 0, 2);
+    my $last = substr($sha1, 1, 2);
+    my $newPath = "images/$collection/$first/$last/$name.$extension";
+
+    if (-e "/usr/local/apache2/htdocs/$newPath") {
+        print "/$newPath\n";
+    } else {
+        print "/$input\n";
+    }
+}