dockerfile and compose added

Dockerfile

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+ARG ELIXIR="1.16.2"
+ARG ERLANG="26.0.2"
+ARG DEBIAN_VERSION="buster-20240513-slim"
+
+# Step 1: Build release
+FROM hexpm/elixir:${ELIXIR}-erlang-${ERLANG}-debian-${DEBIAN_VERSION} AS build
+
+WORKDIR /plantid_discord_bot
+
+RUN MIX_ENV=prod
+
+RUN mix local.hex --force && \
+    mix local.rebar --force
+
+COPY mix.exs mix.lock ./
+COPY config config
+COPY lib lib
+
+RUN mix deps.get --only prod
+RUN MIX_ENV=prod mix release
+
+# Step 2: Create app image
+FROM debian:${DEBIAN_VERSION}
+
+WORKDIR /plantid_discord_bot
+
+RUN apt-get update -y && apt-get install -y openssl locales
+
+COPY \
+    --from=build \
+    --chown=nobody:root \
+    /plantid_discord_bot/_build/prod/rel/plantid_discord_bot ./
+
+RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
+ENV LANG="en_US.UTF-8"
+ENV LANGUAGE="en_US:en"
+ENV LC_ALL="en_US.UTF-8"
+
+EXPOSE 4321
+
+CMD ["/plantid_discord_bot/bin/plantid_discord_bot", "start"]

docker-compose.yml

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+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: plantid_discord_bot
+    environment:
+      - MIX_ENV=prod
+      - PLANTNET_API_KEY=${PLANTNET_API_KEY}
+      - DISCORD_TOKEN=${DISCORD_TOKEN}
+      - LOGS_DISCORD_WEBHOOK_URL=${LOGS_DISCORD_WEBHOOK_URL}
+    ports:
+      - "4321:4321"
+    volumes:
+      - appdata:/plantid_discord_bot
+
+volumes:
+  appdata: