fix(Docker): switch from alpine to debian as base image

# syntax=docker/dockerfile:1

FROM alpine:3.16

FROM debian:12.0

ARG TARGETPLATFORM

# environment variables

ENV MMS_UID=1001

ENV MMS_GID=1001

# CA certificates are used for SSL/TLS

RUN apk --no-cache add ca-certificates

# wget: required for ffmpeg//ffprobe download

# unzip: required for ffmpeg/ffprobe unpacking

RUN apt-get update && apt-get install -y wget unzip

# create new user and group

RUN addgroup -g "${MMS_GID}" "${MMS_GROUP}"

RUN adduser -D -H -u "${MMS_UID}" -G "${MMS_GROUP}" "${MMS_USER}"

RUN addgroup --gid "${MMS_GID}" "${MMS_GROUP}"

RUN adduser --disabled-password --no-create-home --uid "${MMS_UID}" --ingroup "${MMS_GROUP}" "${MMS_USER}"

# use new user for the following commands

USER ${MMS_USER}:${MMS_GROUP}