Update dockerfile after build process changes

Fixes #13

Dockerfile

 
 RUN apk add --no-cache git make curl
 
-# install goreleaser
-RUN mkdir -p /go/src/github.com/goreleaser
-WORKDIR /go/src/github.com/goreleaser
-
-RUN git clone https://github.com/goreleaser/goreleaser.git
-WORKDIR /go/src/github.com/goreleaser/goreleaser
-RUN make setup build
-RUN cp ./goreleaser /usr/bin
-
 # get oragono
 RUN mkdir -p /go/src/github.com/oragono
 WORKDIR /go/src/github.com/oragono
 WORKDIR /go/src/github.com/oragono/oragono
 
 # compile
-RUN make build
+RUN make
 
 
 
 
 # oragono itself
 RUN mkdir -p /ircd-bin
-COPY --from=build-env /go/src/github.com/oragono/oragono/dist/linux_amd64/oragono /ircd-bin
+COPY --from=build-env /go/bin/oragono /ircd-bin
 COPY --from=build-env /go/src/github.com/oragono/oragono/languages /ircd-bin/languages/
 COPY --from=build-env /go/src/github.com/oragono/oragono/oragono.yaml /ircd-bin/oragono.yaml
 COPY run.sh /ircd-bin/run.sh