change: add empty /tmp to binary-only image to make it work with conf…

…ig files

Dockerfile

@@ -7,6 +7,7 @@ ARG DOCKER_VERSION=23.0.1
 FROM golang:1.20 as builder
 ARG GIT_TAG_OVERRIDE
 WORKDIR /app
+RUN mkdir /tmp/empty
 COPY . .
 RUN make build -e GIT_TAG_OVERRIDE=${GIT_TAG_OVERRIDE} && bin/k3d version
 
@@ -40,5 +41,7 @@ COPY --from=builder /app/bin/k3d /bin/k3d
 # -> only the k3d binary.. nothing else #
 #########################################
 FROM scratch as binary-only
+# empty tmp directory to avoid errors when transforming the config file
+COPY --from=builder /tmp/empty /tmp
 COPY --from=builder /app/bin/k3d /bin/k3d
 ENTRYPOINT ["/bin/k3d"]