add docker

Dockerfile

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+FROM rust AS builder
+WORKDIR /random
+
+# Build dependencies
+RUN echo "fn main() {}" > dummy.rs
+COPY Cargo.toml .
+RUN sed -i 's#src/main.rs#dummy.rs#' Cargo.toml
+RUN cargo build --release
+RUN sed -i 's#dummy.rs#src/main.rs#' Cargo.toml
+
+# Prepare build
+COPY src src
+RUN touch src/main.rs
+
+# Build release
+RUN cargo build --release
+
+# Run binary
+FROM rust:slim
+WORKDIR /app
+COPY --from=builder /random/target/release/random random
+COPY static static
+CMD ["./rust_talks"]

docker-compose.yaml

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+version: "3.9"
+
+services:
+  web:
+    ports:
+      - 8004:8004
+    environment:
+      VIRTUAL_PORT: 8004
+      VIRTUAL_HOST: talks.cosi.clarkson.edu,talks.cslabs.clarkson.edu,talks
+      LETSENCRYPT_HOST: talks.cosi.clarkson.edu,talks.cslabs.clarkson.edu
+    build:
+      context: .
+
+networks:
+  default:
+    external:
+      name: nginx-proxy