v0.1.0: software map renderer + SDL3 window viewer

Dockerfile

@@ -17,16 +17,22 @@ RUN if [ -n "$APT_MIRROR" ]; then \
 
 RUN --mount=type=cache,target=/var/lib/apt,sharing=locked \
     --mount=type=cache,target=/var/cache/apt,sharing=locked \
-    apt-get update && apt-get install -y --no-install-recommends \
+    for attempt in 1 2 3 4 5; do \
+        apt-get -o Acquire::Retries=5 update && break; \
+        echo "apt-get update failed (attempt $attempt), retrying"; \
+        sleep 5; \
+    done \
+    && apt-get -o Acquire::Retries=5 install -y --no-install-recommends \
         build-essential \
         ca-certificates \
         cmake \
         g++-16 \
         gdb \
         git \
+        libsdl3-dev \
         ninja-build \
         pkg-config \
-        && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/*
 
 # Pin the toolchain to GCC 16 (the distro default is still GCC 15).
 ENV CC=gcc-16
@@ -48,9 +54,11 @@ FROM ubuntu:26.04 AS deploy
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
+RUN apt-get -o Acquire::Retries=5 update \
+    && apt-get -o Acquire::Retries=5 install -y --no-install-recommends \
+        libsdl3-0 \
         libstdc++6 \
-        && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 COPY --from=dev /work/build/bin/openra3 /app/openra3