docker: add initial Dockerfile

.dockerignore

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+app/build
+app/coverage
+app/node_modules
+shushtar-debug

Dockerfile

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+FROM golang:1.13-alpine as builder
+
+# Copy in the local repository to build from.
+COPY . /go/src/github.com/lightninglabs/shushtar
+
+# Force Go to use the cgo based DNS resolver. This is required to ensure DNS
+# queries required to connect to linked containers succeed.
+ENV GODEBUG netdns=cgo
+
+# Explicitly turn on the use of modules (until this becomes the default).
+ENV GO111MODULE on
+
+ENV NODE_VERSION=v12.17.0
+
+# Install dependencies and install/build shushtar.
+RUN apk add --no-cache --update alpine-sdk \
+    git \
+    make \
+    curl \
+    bash \
+    binutils \
+    tar \
+&& touch ~/.bashrc \
+&& curl -sfSLO https://unofficial-builds.nodejs.org/download/release/${NODE_VERSION}/node-${NODE_VERSION}-linux-x64-musl.tar.xz \
+&& tar -xf node-${NODE_VERSION}-linux-x64-musl.tar.xz -C /usr --strip 1 \
+&& rm node-${NODE_VERSION}-linux-x64-musl.tar.xz \
+&& curl -o- -L https://yarnpkg.com/install.sh | bash \
+&& /bin/bash \
+&& . ~/.bashrc \
+&&  cd /go/src/github.com/lightninglabs/shushtar \
+&&  make install \
+&& go install -v -trimpath github.com/lightningnetwork/lnd/cmd/lncli \
+&& go install -v -trimpath github.com/lightninglabs/faraday/cmd/frcli \
+&& go install -v -trimpath github.com/lightninglabs/loop/cmd/loop
+
+# Start a new, final image to reduce size.
+FROM alpine as final
+
+# Define a root volume for data persistence.
+VOLUME /root/.lnd
+
+# Expose shushtar and lnd ports (server, rpc).
+EXPOSE 8443 10009 9735
+
+# Copy the binaries and entrypoint from the builder image.
+COPY --from=builder /go/bin/shushtar /bin/
+COPY --from=builder /go/bin/lncli /bin/
+COPY --from=builder /go/bin/frcli /bin/
+COPY --from=builder /go/bin/loop /bin/
+
+# Add bash.
+RUN apk add --no-cache \
+    bash \
+    jq \
+    ca-certificates
+
+# Specify the start command and entrypoint as the shushtar daemon.
+ENTRYPOINT ["shushtar"]