Add Dockerfile

Dockerfile

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+ARG RUST_VERSION=1.75.0
+ARG APP_NAME=minecraft_schematics_web
+
+FROM rust:${RUST_VERSION}-slim-bullseye AS build
+
+# RUN apt-get update && apt-get install -y pkg-config libssl-dev
+
+ARG APP_NAME
+WORKDIR /app
+
+RUN --mount=type=bind,source=src,target=src \
+    --mount=type=bind,source=Cargo.toml,target=Cargo.toml \
+    --mount=type=bind,source=Cargo.lock,target=Cargo.lock \
+    --mount=type=cache,target=/app/target \
+    --mount=type=cache,target=/usr/local/cargo/registry \
+    <<EOF
+set -e
+cargo build --locked --release
+cp ./target/release/$APP_NAME /bin/server
+EOF
+
+FROM debian:bullseye-slim AS final
+
+# RUN apt-get update && apt-get install -y ca-certificates
+
+ENV PUID=1000 PGID=1000
+
+RUN adduser \
+    --disabled-password \
+    --gecos "" \
+    --home "/nonexistent" \
+    --shell "/sbin/nologin" \
+    --no-create-home \
+    --uid "${PUID}" \
+    appuser
+
+USER appuser
+
+COPY --from=build /bin/server /bin/
+
+CMD ["/bin/server"]