tools: Use a multi-stage build for mkimage-iso-bios
mkimage-iso-bios contained the full alpine base. Only
copy packages actually needed.
-FROM linuxkit/alpine:daed76b8f1d28cdeeee215a95b9671c682a405dc
-
-RUN \
- apk update && apk upgrade && \
- apk add --no-cache \
- libarchive-tools \
+FROM linuxkit/alpine:daed76b8f1d28cdeeee215a95b9671c682a405dc as mirror
+RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
+RUN apk add --no-cache --initdb -p /out \
+ alpine-baselayout \
+ busybox \
cdrkit \
+ libarchive-tools \
syslinux \
&& true
+RUN mv /out/etc/apk/repositories.upstream /out/etc/apk/repositories
+FROM scratch
+WORKDIR /
+COPY --from=mirror /out/ /
COPY . .
-
ENTRYPOINT [ "/make-iso" ]
