chore: fix dockerfile slim name

docker/docker-compose.slim.yml

@@ -1,34 +0,0 @@
-version: "3"
-services:
-  rpxy-rp:
-    image: jqtype/rpxy:slim # ghcr.io/junkurihara/rust-rpxy:slim also works
-    container_name: rpxy
-    init: true
-    restart: unless-stopped
-    ports:
-      - 127.0.0.1:8080:8080/tcp
-      - 127.0.0.1:8443:8443/udp
-      - 127.0.0.1:8443:8443/tcp
-    # build: # Uncomment if you build yourself
-    #   context: ../
-    #   additional_contexts:
-    #     - messense/rust-musl-cross:amd64-musl=docker-image://messense/rust-musl-cross:x86_64-musl
-    #     - messense/rust-musl-cross:arm64-musl=docker-image://messense/rust-musl-cross:aarch64-musl
-    #   dockerfile: ./docker/Dockerfile.slim # based on alpine and build x86_64-unknown-linux-musl
-    #   platforms: # Choose your platforms
-    #     - "linux/amd64"
-    #     # - "linux/arm64"
-    environment:
-      - LOG_LEVEL=debug
-      - LOG_TO_FILE=true
-      - HOST_USER=jun
-      - HOST_UID=501
-      - HOST_GID=501
-      # - WATCH=true
-    tty: false
-    privileged: true
-    volumes:
-      - ./log:/rpxy/log
-      - ../example-certs/server.crt:/certs/server.crt:ro
-      - ../example-certs/server.key:/certs/server.key:ro
-      - ../config-example.toml:/etc/rpxy.toml:ro