Include contents of the zed-server repo

We're going full monorepo.

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

Dockerfile

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+# syntax = docker/dockerfile:1.2
+
+FROM rust as builder
+WORKDIR app
+RUN curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
+RUN apt-get install -y nodejs
+COPY . .
+
+# Install script dependencies
+RUN --mount=type=cache,target=./script/node_modules \
+    cd ./script && npm install --quiet
+
+# Build CSS
+RUN --mount=type=cache,target=./script/node_modules \
+    script/build-css --release
+
+# Compile server
+RUN --mount=type=cache,target=./script/node_modules \
+    --mount=type=cache,target=/usr/local/cargo/registry \
+    --mount=type=cache,target=./target \
+    cargo build --release --bin zed-server
+
+# Copy server binary out of cached directory
+RUN --mount=type=cache,target=./target \
+    cp /app/target/release/zed-server /app/zed-server
+
+# Copy server binary to the runtime image
+FROM debian:buster-slim as runtime
+RUN apt-get update; \
+    apt-get install -y --no-install-recommends libcurl4-openssl-dev ca-certificates
+WORKDIR app
+COPY --from=builder /app/zed-server /app
+ENTRYPOINT ["/app/zed-server"]