Added Dockerfile and drone config to auto build and deploy new versions

.dockerignore

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+/target
+.env

.drone.yml

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+kind: pipeline
+type: docker
+name: default
+
+steps:
+    - name: build
+      image: docker
+      volumes:
+          - name: socket
+            path: /var/run/docker.sock
+      commands:
+          - DOCKER_BUILDKIT=1 docker build -t automation_rs .
+
+    - name: deploy
+      image: docker
+      volumes:
+          - name: socket
+            path: /var/run/docker.sock
+      environment:
+          MQTT_PASSWORD:
+              from_secret: MQTT_PASSWORD
+          HUE_TOKEN:
+              from_secret: HUE_TOKEN
+          NTFY_TOPIC:
+              from_secret: NTFY_TOPIC
+      commands:
+          - docker stop automation_rs || true
+
+          - docker rm automation_rs || true
+
+          - docker create -e MQTT_PASSWORD=$MQTT_PASSWORD -e HUE_TOKEN=$HUE_TOKEN -e NTFY_TOPIC=$NTFY_TOPIC --name automation_rs automation_rs
+          - docker network connect mqtt automation_rs
+          - docker network connect web automation_rs
+          - docker start automation_rs
+
+      when:
+        branch:
+          - master
+        event:
+          exclude:
+            - pull_request
+
+volumes:
+    - name: socket
+      host:
+          path: /var/run/docker.sock

Dockerfile

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+FROM rustlang/rust:nightly-slim AS build
+
+RUN cargo new --bin /app
+RUN cargo new --lib /app/impl_cast
+RUN cargo new --lib /app/google-home
+
+COPY impl_cast/Cargo.toml /app/impl_cast
+COPY google-home/Cargo.toml /app/google-home
+COPY Cargo.toml Cargo.lock /app/
+
+WORKDIR /app/
+RUN --mount=type=cache,target=/usr/local/cargo/registry cargo build --release
+
+COPY impl_cast/src/ /app/impl_cast/src/
+COPY google-home/src/ /app/google-home/src/
+COPY src/ /app/src/
+
+RUN --mount=type=cache,target=/usr/local/cargo/registry set -e; touch /app/src/main.rs /app/src/lib.rs /app/google-home/src/lib.rs /app/impl_cast/src/lib.rs; cargo build --release
+
+CMD ["/app/target/release/automation"]