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-rw-r--r--Dockerfile6
1 files changed, 4 insertions, 2 deletions
diff --git a/Dockerfile b/Dockerfile
index 3c2b7f43b..f75519b4b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,6 @@
-FROM --platform=$BUILDPLATFORM debian:stable-slim AS build
+ARG DEBIAN_IMAGE=debian:stable-slim
+ARG BASE=gcr.io/distroless/static-debian11:nonroot
+FROM --platform=$BUILDPLATFORM ${DEBIAN_IMAGE} AS build
SHELL [ "/bin/sh", "-ec" ]
RUN export DEBCONF_NONINTERACTIVE_SEEN=true \
@@ -12,7 +14,7 @@ RUN export DEBCONF_NONINTERACTIVE_SEEN=true \
COPY coredns /coredns
RUN setcap cap_net_bind_service=+ep /coredns
-FROM --platform=$TARGETPLATFORM gcr.io/distroless/static-debian11:nonroot
+FROM --platform=$TARGETPLATFORM ${BASE}
COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=build /coredns /coredns
USER nonroot:nonroot