Add support for RISC-V

Signed-off-by: Antony Chazapis <[email protected]>

Author: chazapis

Dockerfile.dapper

@@ -1,14 +1,14 @@
 FROM golang:1.20-alpine3.16
 
 ARG DAPPER_HOST_ARCH
-ENV ARCH $DAPPER_HOST_ARCH
+ENV HOST_ARCH $DAPPER_HOST_ARCH
 
 RUN apk -U add bash git gcc musl-dev docker vim less file curl wget ca-certificates
 RUN if [ "$(go env GOARCH)" = "amd64" ]; then \
     curl -sL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v1.40.0; \
     fi
 
-ENV DAPPER_ENV REPO TAG DRONE_TAG
+ENV DAPPER_ENV REPO TAG DRONE_TAG ARCH
 ENV DAPPER_SOURCE /go/src/github.com/rancher/klipper-lb/
 ENV DAPPER_OUTPUT ./bin ./dist
 ENV DAPPER_DOCKER_SOCKET true

package/Dockerfile

@@ -1,4 +1,5 @@
-FROM alpine:3.18
+ARG BASE=alpine:3.18
+FROM $BASE
 ARG BUILDDATE
 LABEL buildDate=$BUILDDATE
 RUN apk --no-cache upgrade && \

scripts/package

@@ -21,5 +21,9 @@ if [ -e ${DOCKERFILE}.${ARCH} ]; then
     DOCKERFILE=${DOCKERFILE}.${ARCH}
 fi
 
-docker build --build-arg BUILDDATE=$(date +%Y%m%d) -f ${DOCKERFILE} -t ${IMAGE} .
+if [ "$ARCH" = "riscv64" ]; then
+    export DOCKER_BUILDKIT=1
+    DOCKER_ARGS="--platform=$ARCH --build-arg BASE=riscv64/alpine:edge"
+fi
+docker build ${DOCKER_ARGS} --build-arg BUILDDATE=$(date +%Y%m%d) -f ${DOCKERFILE} -t ${IMAGE} .
 echo Built ${IMAGE}