Add docker config

Author: spenserblack

.dockerignore

@@ -0,0 +1,13 @@
+.devcontainer/
+.git/
+.github/
+.venv/
+.vscode/
+lua/
+scripts/
+target/
+
+*.md
+.editorconfig
+.git-blame-ignore-revs
+.gitignore

Dockerfile

@@ -0,0 +1,10 @@
+FROM rust:1-alpine AS builder
+WORKDIR /app
+COPY . .
+RUN apk --update add cmake make musl-dev pkgconfig && \
+	cargo build --release
+
+FROM alpine:3 AS runtime
+COPY --from=builder /app/target/release/fancy-tree /usr/local/bin/fancy-tree
+
+ENTRYPOINT ["/usr/local/bin/fancy-tree"]