Added a Dockerfile and a CI pipeline that builds and pushes ferris

.gitignore

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+/.idea/

.woodpecker.yml

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+pipeline:
+  build_api:
+    image: docker:20.10.23
+    commands:
+      - docker login $GIT_URI -p $GIT_PASS -u $GIT_USER
+      - DOCKER_BUILDKIT=1 docker build -t ferris:$CI_BUILD_NUMBER -t $GIT_URI/mslot/ferris:$CI_BUILD_NUMBER .
+      - docker push $GIT_URI/mslot/ferris:$CI_BUILD_NUMBER
+    secrets: [ git_uri, git_pass, git_user ]
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock

Dockerfile

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+FROM rust:1.67.0-slim-buster
+RUN cargo install trunk && rustup target add wasm32-unknown-unknown
+
+WORKDIR /source
+CMD ["build", "--release"]
+ENTRYPOINT ["trunk"]