add mumble image

voice/mumble/Dockerfile

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+FROM      --platform=$TARGETOS/$TARGETARCH alpine:3.16
+
+LABEL       author="Michael Parker" maintainer="parker@pterodactyl.io"
+
+LABEL     org.opencontainers.image.source="https://github.com/pterodactyl/yolks"
+LABEL     org.opencontainers.image.licenses=MIT
+
+##    install dependencies
+RUN   apk add --no-cache murmur
+
+RUN   adduser -D container
+
+USER   container
+ENV    USER=container HOME=/home/container
+WORKDIR /home/container
+
+COPY  ./entrypoint.sh /entrypoint.sh
+CMD   ["/bin/bash", "/entrypoint.sh"]

voice/mumble/entrypoint.sh

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+#!/bin/ash
+cd /home/container
+
+# Make internal Docker IP address available to processes.
+INTERNAL_IP=$(ip route get 1 | awk '{print $(NF-2);exit}')
+export INTERNAL_IP
+
+# Print current Rust version
+cargo --version
+
+# Replace Startup Variables
+MODIFIED_STARTUP=$(echo -e $(echo -e ${STARTUP} | sed -e 's/{{/${/g' -e 's/}}/}/g'))
+echo -e ":/home/container$ ${MODIFIED_STARTUP}"
+
+# Run the Server
+eval ${MODIFIED_STARTUP}