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mnemo_cards_backend/Dockerfile

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+# syntax=docker/dockerfile:1.7
+
+# --- Build stage ------------------------------------------------------------
+FROM dart:stable-sdk AS build
+WORKDIR /app
+
+# Cache dependencies
+COPY pubspec.* ./
+RUN dart pub get
+
+# Copy sources
+COPY . .
+
+# Compile to native executable
+RUN dart compile exe lib/main.dart -o /app/server
+
+# --- Runtime stage ----------------------------------------------------------
+FROM debian:bookworm-slim AS runtime
+WORKDIR /app
+
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends ca-certificates openssl curl \
+ && rm -rf /var/lib/apt/lists/*
+
+# App binary
+COPY --from=build /app/server /app/server
+
+# Static/assets needed at runtime (adjust as required)
+COPY public /app/public
+COPY data /app/data
+
+# Writable dirs for isar/backups by default
+RUN mkdir -p /app/isar /app/backups
+
+ENV PORT=8081 \
+    ADDRESS=0.0.0.0 \
+    ISAR_DIR=/app/isar \
+    BACKUP_DIR=/app/backups \
+    WORKDIR=/app
+
+    
+EXPOSE 8081
+
+# Healthcheck (tune path if different)
+HEALTHCHECK --interval=15s --timeout=5s --start-period=10s --retries=5 \
+  CMD curl -f http://127.0.0.1:${PORT}/health || exit 1
+
+CMD ["/app/server", "-a", "0.0.0.0", "-p", "8081", "--isar", "/app/isar", "--backup", "/app/backups", "--workdir", "/app"]