Add dockerfile

Dockerfile

@@ -0,0 +1,27 @@
+FROM golang as builder
+
+WORKDIR /trantor/
+COPY main.go go.* /trantor/
+COPY lib/ /trantor/lib/
+
+RUN CGO_ENABLED=0 go build -ldflags '-extldflags "-static"' .
+
+FROM scratch
+
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
+COPY --from=builder /trantor/trantor /trantor
+
+COPY robots.txt description.json opensearch.xml key.asc /assets/
+COPY img /assets/img/
+COPY css /assets/css/
+COPY js /assets/js/
+COPY templates /assets/templates/
+COPY logger.xml /
+
+ENV TRANTOR_ASSETS=/assets
+ENV TRANTOR_STORE=/store
+VOLUME /store
+WORKDIR /
+
+ENTRYPOINT ["/trantor"]