feat: Adds Dockerfile.

Dockerfile

@@ -0,0 +1,27 @@
+FROM swift:5.10 AS build
+
+WORKDIR /build
+
+# First just resolve dependencies.
+COPY ./Package.* ./
+RUN --mount=type=cache,target=/build/.build swift package resolve \
+  $([ -f ./Package.resolved ] && echo "--force-resolved-versions" || true)
+
+# Copy entire repo into container
+COPY . .
+
+# Build the static site.
+RUN --mount=type=cache,target=/build/.build swift run
+
+# ==================================================
+# Run Image
+# ==================================================
+FROM caddy:2.9.1-alpine
+
+WORKDIR /app
+
+COPY --from=build /build/deploy .
+
+EXPOSE 80
+
+CMD ["/usr/bin/caddy", "file-server", "--root", "/app", "--listen", ":80"]