feat: add sm64coopdx headless dedicated server

Multi-stage Docker build compiles sm64coopdx from source with HEADLESS=1.
Includes patches for GCC 11 float.h and upstream platform.c fallback bug.
Server runs on UDP 7777, supports 16 players, comes with bundled mods.

Also hardcodes OpenFusion SHARD_IP (was using PUBLIC_HOST variable).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker/docker-compose.dev.yml

@@ -90,7 +90,7 @@ services:
       dockerfile: Dockerfile
     restart: unless-stopped
     environment:
-      SHARD_IP: ${PUBLIC_HOST:-192.168.10.234}
+      SHARD_IP: 192.168.10.234
       MOTD: ${OPENFUSION_MOTD:-Bienvenido a Project Afterlife - FusionFall Academy}
     ports:
       - "23000:23000"
@@ -172,6 +172,25 @@ services:
     volumes:
       - afc_bridge_data:/data
 
+  sm64coopdx:
+    build:
+      context: ../servers/sm64coopdx
+      dockerfile: Dockerfile
+    restart: unless-stopped
+    container_name: sm64coopdx
+    environment:
+      SM64_PORT: ${SM64_PORT:-7777}
+      SM64_PLAYERS: ${SM64_PLAYERS:-16}
+    ports:
+      - "7777:7777/udp"
+    volumes:
+      - sm64_save:/server/save
+      - sm64_mods:/server/mods
+    deploy:
+      resources:
+        limits:
+          memory: 2G
+
 volumes:
   postgres_data:
   minio_data:
@@ -179,6 +198,8 @@ volumes:
   minecraft_ftb_data:
   geth_data:
   afc_bridge_data:
+  sm64_save:
+  sm64_mods:
   certbot_etc:
     external: true
     name: docker_certbot_etc

servers/sm64coopdx/.dockerignore

@@ -0,0 +1,2 @@
+*.md
+.git

servers/sm64coopdx/.gitignore

@@ -0,0 +1,4 @@
+# SM64 ROM — copyrighted, not distributable
+*.z64
+*.n64
+*.v64

servers/sm64coopdx/Dockerfile

@@ -0,0 +1,57 @@
+# sm64coopdx headless dedicated server
+# Requires baserom.us.z64 (SM64 US ROM) in build context
+
+# --- Build stage ---
+FROM ubuntu:jammy AS build
+
+RUN apt-get update && apt-get install -y \
+    binutils-mips-linux-gnu \
+    bsdmainutils \
+    build-essential \
+    libcapstone-dev \
+    pkgconf \
+    python3 \
+    libz-dev \
+    libcurl4-openssl-dev \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /sm64
+
+RUN git clone --depth 1 https://github.com/coop-deluxe/sm64coopdx.git .
+
+COPY baserom.us.z64 .
+
+# Patch: add missing float.h include (GCC 11 strictness)
+RUN sed -i '1i #include <float.h>' src/engine/math_util.c
+
+# Patch: fix platform.c fallback — upstream renamed functions but forgot the #else branch
+RUN sed -i 's/const char \*sys_exe_path(void) {/const char *sys_exe_path_dir(void) {\n    return ".";\n}\n\nconst char *sys_resource_path(void) {\n    return ".";\n}\n\nconst char *sys_exe_path(void) {/' src/pc/platform.c
+
+RUN make HEADLESS=1 DISCORD_SDK=0 COOPNET=0 -j$(nproc)
+
+# --- Runtime stage ---
+FROM ubuntu:jammy
+
+RUN apt-get update && apt-get install -y \
+    libcurl4 \
+    libz1 \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN useradd -m -s /bin/bash sm64
+
+WORKDIR /server
+
+COPY --from=build /sm64/build/us_pc/ .
+COPY --from=build /sm64/baserom.us.z64 .
+
+RUN mkdir -p /server/mods /server/save && chown -R sm64:sm64 /server
+
+USER sm64
+
+EXPOSE 7777/udp
+
+ENV SM64_PORT=7777
+ENV SM64_PLAYERS=16
+
+ENTRYPOINT ["sh", "-c", "./sm64coopdx --server ${SM64_PORT} --headless --playercount ${SM64_PLAYERS} --skip-intro"]