rebuild Dockerfile for multi-arch builds

Dockerfile

@@ -3,19 +3,23 @@ FROM golang:1.20 AS build-env
 COPY go.mod go.sum /src/
 WORKDIR /src
 RUN go mod download
-ADD . /src
-ARG target=linux
+COPY . .
+ARG TARGETOS
+ARG TARGETARCH
 ARG release=
-ENV RELEASE=$release
-RUN make $target
+RUN <<EOR
+  VERSION=$(git rev-parse --short HEAD)
+  BUILDTIME=$(date -u '+%Y-%m-%dT%H:%M:%SZ')
+  RELEASE=$release
+  CGO_ENABLED=1 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /bin/dora-explorer -ldflags="-s -w -X 'github.com/pk910/light-beaconchain-explorer/utils.BuildVersion=${VERSION}' -X 'github.com/pk910/light-beaconchain-explorer/utils.BuildRelease=${RELEASE}' -X 'github.com/pk910/light-beaconchain-explorer/utils.Buildtime=${BUILDTIME}'" ./cmd/explorer
+EOR
 
 # final stage
 FROM debian:stable-slim
 WORKDIR /app
 RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates
 RUN update-ca-certificates
-COPY --from=build-env /src/bin/explorer_linux_amd64 /app
-COPY --from=build-env /src/config /app/config
+COPY --from=build-env /bin/dora-explorer /app
 EXPOSE 8080
-ENTRYPOINT ["./explorer_linux_amd64"]
-CMD ["-config=./config/default.config.yml"]
+ENTRYPOINT ["./dora-explorer"]
+CMD []