diff --git a/Dockerfile b/Dockerfile
index be61944..d8f9c37 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,9 +2,15 @@ ARG WORDPRESS_IMAGE
 
 FROM wordpress:${WORDPRESS_IMAGE}
 
-# Installs mhsendmail for Mailhog.
-RUN curl --location --output /usr/local/bin/mhsendmail https://github.com/mailhog/mhsendmail/releases/download/v0.2.0/mhsendmail_linux_amd64 && \
-  chmod +x /usr/local/bin/mhsendmail
+# Install Mailpit.
+RUN ["/bin/bash", "-c", "bash < <(curl -sL https://raw.githubusercontent.com/axllent/mailpit/develop/install.sh)"]
 
-# Configures sendmail_path and sends to mailhog container.
-RUN echo 'sendmail_path="/usr/local/bin/mhsendmail --smtp-addr=mailhog:1025"' > /usr/local/etc/php/conf.d/mailhog.ini
+# Configure sendmail to use Mailpit.
+RUN echo 'sendmail_path="/usr/local/bin/mailpit sendmail --smtp-addr=mail:1025"' > /usr/local/etc/php/conf.d/mail.ini
+
+# Easy installation of PHP extensions in official PHP Docker images: https://github.com/mlocati/docker-php-extension-installer/.
+ADD https://github.com/mlocati/docker-php-extension-installer/releases/latest/download/install-php-extensions /usr/local/bin/
+
+# Install PHP extensions.
+RUN chmod +x /usr/local/bin/install-php-extensions && \
+  install-php-extensions memcache memcached xdebug
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..06ba105
--- /dev/null
+++ b/README.md
@@ -0,0 +1,26 @@
+# Jetty WordPress Image
+> This image is based off the official Docker image maintained by the Docker community: https://hub.docker.com/_/wordpress
+
+## Adding New Image Versions
+The `versions.yml` contains the config for the image versions supported. When adding new versions, please check the tags supported by the WordPress image: https://hub.docker.com/_/wordpress/tags.
+
+Example `versions.yml`:
+```yml
+6.0: [8.1, 8,0]
+```
+
+This will generate the `config.json` for the CircleCI `bigbite/docker-image-extend` orb, containing WordPress 6.0, with PHP versions 8.1 and 8.0:
+
+Example generated `conifg.json`:
+```json
+[
+    { "tag": "6.0-php8.1", "args": { "WORDPRESS_IMAGE": "6.0-php8.1" } },
+    { "tag": "6.0-php8.0", "args": { "WORDPRESS_IMAGE": "6.0-php8.0" } },
+]
+```
+
+To generate the `config.json` file, run:
+
+```
+./generate-config.sh versions.yml > config.json
+```
diff --git a/config.json b/config.json
index 835b08d..17bb4b1 100644
--- a/config.json
+++ b/config.json
@@ -1,58 +1,11 @@
 [
-  {
-    "tag": "6.0-php8.1",
-    "args": {
-      "WORDPRESS_IMAGE": "6.0-php8.1"
-     }
-  },
-  {
-    "tag": "6.0-php8.0",
-    "args": {
-      "WORDPRESS_IMAGE": "6.0-php8.0"
-     }
-  },
-  {
-    "tag": "6.0-php7.4",
-    "args": {
-      "WORDPRESS_IMAGE": "6.0-php7.4"
-    }
-  },
-
-  {
-    "tag": "5.9-php8.1",
-    "args": {
-      "WORDPRESS_IMAGE": "5.9-php8.1"
-     }
-  },
-  {
-    "tag": "5.9-php8.0",
-    "args": {
-      "WORDPRESS_IMAGE": "5.9-php8.0"
-     }
-  },
-  {
-    "tag": "5.9-php7.4",
-    "args": {
-      "WORDPRESS_IMAGE": "5.9-php7.4"
-    }
-  },
-
-  {
-    "tag": "5.8-php8.1",
-    "args": {
-      "WORDPRESS_IMAGE": "5.8-php8.1"
-     }
-  },
-  {
-    "tag": "5.8-php8.0",
-    "args": {
-      "WORDPRESS_IMAGE": "5.8-php8.0"
-     }
-  },
-  {
-    "tag": "5.8-php7.4",
-    "args": {
-      "WORDPRESS_IMAGE": "5.8-php7.4"
-    }
-  }
+    { "tag": "6.1-php8.1", "args": { "WORDPRESS_IMAGE": "6.1-php8.1" } },
+    { "tag": "6.1-php8.0", "args": { "WORDPRESS_IMAGE": "6.1-php8.0" } },
+    { "tag": "6.1-php7.4", "args": { "WORDPRESS_IMAGE": "6.1-php7.4" } },
+    { "tag": "6.0-php8.1", "args": { "WORDPRESS_IMAGE": "6.0-php8.1" } },
+    { "tag": "6.0-php8.0", "args": { "WORDPRESS_IMAGE": "6.0-php8.0" } },
+    { "tag": "6.0-php7.4", "args": { "WORDPRESS_IMAGE": "6.0-php7.4" } },
+    { "tag": "5.9-php8.1", "args": { "WORDPRESS_IMAGE": "5.9-php8.1" } },
+    { "tag": "5.9-php8.0", "args": { "WORDPRESS_IMAGE": "5.9-php8.0" } },
+    { "tag": "5.9-php7.4", "args": { "WORDPRESS_IMAGE": "5.9-php7.4" } }
 ]
\ No newline at end of file
diff --git a/generate-config.sh b/generate-config.sh
new file mode 100755
index 0000000..6528ddc
--- /dev/null
+++ b/generate-config.sh
@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+
+# if no file supplied, exit
+if [[ ! -f "$1" ]]; then
+	>&2 echo "File does not exist, or was not specified.";
+	exit 1;
+fi
+
+# check whether verbose output is enabled
+declare -a positional_args;
+while [[ $# -gt 0 ]]; do
+	case $1 in
+		--verbose|-v)
+			verbose=1;
+			shift;
+		;;
+		--*|-*)
+			>&2 echo "Unknown option $1";
+			exit 1;
+		;;
+		*)
+			positional_args+=("$1");
+			shift;
+		;;
+	esac
+done
+set -- "${positional_args[@]}";
+
+# output verbose messages
+function verbose() {
+	if [ $verbose ]; then
+		>&2 echo "$1";
+	fi
+}
+
+# create an array to store our list of image strings
+declare -a images;
+
+# read file one line at a time.
+# each line contains the following:
+# wp.version: [php.version1,php.version2 ...]
+while IFS= read -r line; do
+	verbose 'Reading line:';
+	verbose "- $line";
+
+	# line is keyed by wp version, so everything before the first semicolon is the wp version.
+	wpVersion=$(echo "$line" | awk -F':' '{print $1}');
+	verbose "- - WP Version: $wpVersion";
+
+	# value for each line is an array of php versions, so everything after the semicolon is the array
+	# use sed to strip anything that isn't a number, comma, or period, which leaves a csv of php versions
+	phpVersions=$(echo "$line" | awk -F':' '{print $2}' | sed 's/[^0-9.,]//g');
+	verbose "- - PHP Versions: $phpVersions";
+
+	# split the php versions into an array by "exploding" on the comma
+	IFS=',' read -r -a phpVersions <<< "$phpVersions"
+
+	# for each version in the array
+	for php in "${phpVersions[@]}"; do
+		verbose "- - - Using PHP Version: $php";
+
+		# build the image name
+		image=$(printf '%s-php%s' "$wpVersion" "$php");
+		verbose "- - - Image Name: $image";
+
+		# build the json entry for the image name, and add to an array of images
+		images+=("$(printf '{ "tag": "%s", "args": { "WORDPRESS_IMAGE": "%s" } }' "$image" "$image")");
+		verbose "- - Generated JSON Entry: $(printf '{ "tag": "%s", "args": { "WORDPRESS_IMAGE": "%s" } }' "$image" "$image")";
+	done;
+done < "$1";
+
+# start building the json!
+verbose 'Building JSON';
+json='';
+
+# for each found image
+for ((i = 0; i < "${#images[@]}"; i++)); do
+	# add to the json string
+	json=$(printf "%s,\n    %s" "$json" "${images[$i]}");
+done
+
+# wrap the string in an array to make it valid (lose the leading delims.)
+printf "[\n%s\n]" "${json:2}"
\ No newline at end of file
diff --git a/versions.yml b/versions.yml
new file mode 100644
index 0000000..c3f5e8c
--- /dev/null
+++ b/versions.yml
@@ -0,0 +1,4 @@
+6.1: [ 8.1, 8.0, 7.4 ]
+6.0: [ 8.1, 8.0, 7.4 ]
+5.9: [ 8.1, 8.0, 7.4 ]
+5.8: [ 8.1, 8.0, 7.4 ]
\ No newline at end of file