Vastly optimise Docker image

Dockerfile

@@ -1,6 +1,14 @@
-FROM rust:bookworm
-WORKDIR /app
+FROM alpine/git:latest as ircie
+WORKDIR /ircie
 RUN git clone https://git.supernets.org/sad/ircie.git
+
+FROM rust:1-bookworm as builder
+WORKDIR /app
 COPY . .
+COPY --from=ircie /ircie/ /app/
 RUN cargo build --release
-CMD ["./target/release/hardfight"]
+
+FROM rust:1-bookworm as app
+WORKDIR /hardfight
+COPY --from=builder /app/target/release/hardfight .
+CMD ["./hardfight"]

docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   hardfight:
+    container_name: hardfight
     image: git.supernets.org/hgw/hardfight:latest
     #build: .
     volumes:
-      - "$PWD/config/:/app/config/"
+      - "$PWD/config/:/hardfight/config/"