remove unmaintained Dockerfile

Dockerfile

@@ -1,23 +0,0 @@
-FROM rust:1.68-buster as builder
-
-RUN apt-get update && \
-    apt-get install -y libssl-dev pkg-config
-
-WORKDIR /srv
-
-# Build dependencies and cache them
-COPY Cargo.* ./
-RUN mkdir -p src && \
-    echo "fn main() {println!(\"if you see this, the build broke\")}" > src/main.rs && \
-    cargo build --release && \
-    rm -r src && \
-    rm target/release/deps/tricot*
-
-# Build final app
-COPY ./src ./src
-RUN cargo build --release
-
-FROM debian:bullseye-slim
-RUN apt-get update && apt-get install -y libssl1.1 iptables ca-certificates
-COPY --from=builder /srv/target/release/tricot /usr/local/sbin/tricot
-CMD ["/usr/local/sbin/tricot"]