feat: initial version

Dockerfile

@@ -0,0 +1,24 @@
+FROM golang:1.13 as build
+WORKDIR /build
+ENV CGO_ENABLED=0
+ADD . /build
+RUN if [ $(go mod tidy -v 2>&1 | grep -c unused) != 0 ]; then echo "Unused modules, please run 'go mod tidy'"; exit 1; fi
+RUN go fmt ./...
+RUN go vet ./...
+RUN CGO_ENABLED=1 go test -mod=readonly -race -coverprofile=.testCoverage.txt.tmp -covermode=atomic -coverpkg=$(go list ./... | tr '\n' , | sed 's/,$//') ./...
+RUN cat .testCoverage.txt.tmp | grep -v generated.go | grep -v _gen.go > .testCoverage.txt
+RUN go tool cover -html=.testCoverage.txt -o coverage.html
+RUN go tool cover -func=.testCoverage.txt
+
+RUN GOOS=linux GOARCH=amd64 go build \
+        -tags prod \
+        -a -installsuffix cgo \
+        -mod=readonly \
+        -o /release/dancefetcher \
+         -ldflags '-w -s' \
+         ./cmd/dancefetcher/dancefetcher.go
+
+FROM scratch
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=build /release/dancefetcher /
+CMD ["/dancefetcher"]