Update Dockerfile to work with publish workflow

Author: Sri Ramanujam

Dockerfile

@@ -4,7 +4,8 @@ COPY . .
 RUN cargo install --path .
 
 FROM debian:buster-slim
-ENV DISCORD_WEBHOOK LISTEN_ADDRESS=0.0.0.0:9094 RUST_LOG=info
-RUN apt-get update && apt-get install -y libssl-dev && rm -rf /var/lib/apt/lists/*
+ENV DISCORD_WEBHOOK LISTEN_ADDRESS=0.0.0.0:9094 RUST_LOG=info DEBIAN_FRONTEND=noninteractive
+LABEL org.opencontainers.image.source="https://github.com/SriRamanujam/alertmanager-discord-bridge"
+RUN apt-get update && apt-get upgrade -y && apt-get install -y libssl-dev && rm -rf /var/lib/apt/lists/*
 COPY --from=builder /code/target/release/alertmanager-discord-bridge /alertmanager-discord-bridge
 CMD ["/alertmanager-discord-bridge"]