Added Elixir images (#182)

elixir/1.13/Dockerfile

@@ -0,0 +1,15 @@
+FROM --platform=$TARGETOS/$TARGETARCH elixir:1.13.4-slim
+
+LABEL author="MrAvox" maintainer="mravox@proton.me"
+
+RUN  apt update \
+            && apt -y install git dnsutils curl iproute2 ffmpeg \
+            && useradd -m -d /home/container container
+
+USER container
+ENV USER=container HOME=/home/container
+WORKDIR /home/container
+
+ENTRYPOINT []
+COPY ./../entrypoint.sh /entrypoint.sh
+CMD [ "/bin/bash", "/entrypoint.sh" ]