Add MariaDB 11.3 & 11.4 (#241)

* Update mariadb.yml

Add '11.3' and '11.4'

* Update README.md

* Create Dockerfile - MariaDB 11.3

* Create Dockerfile - MariaDB 11.4

mariadb/11.4/Dockerfile

@@ -0,0 +1,19 @@
+# -----------------------------------------------------
+# MariaDB Image for Pterodactyl
+# -----------------------------------------------------
+FROM        --platform=$TARGETOS/$TARGETARCH mariadb:11.4
+
+LABEL       author="Michael Parker" maintainer="parker@pterodactyl.io"
+
+ENV         DEBIAN_FRONTEND noninteractive
+
+RUN         apt update -y \
+            && apt install -y netcat \
+            && useradd -d /home/container -m container -s /bin/bash
+
+USER        container
+ENV         USER=container HOME=/home/container
+WORKDIR     /home/container
+
+COPY        ../entrypoint.sh /entrypoint.sh
+CMD ["/bin/bash", "/entrypoint.sh"]