Update prometheus-auth to using BCI Micro as the base

package/Dockerfile

@@ -1,14 +1,8 @@
-FROM alpine:3.15.4
-
-MAINTAINER Frank Mai <[email protected]>
-
-RUN apk add --no-cache --update \
- curl openssl jq ca-certificates \
- ; \
- mkdir -p /data; \
- chown -R nobody:nogroup /data; \
- mkdir -p /run/cache
-
-COPY prometheus-auth /usr/bin/
-
-ENTRYPOINT ["/usr/bin/prometheus-auth"]
+FROM registry.suse.com/bci/bci-micro:15.3
+RUN echo 'promauth:x:1000:1000::/home/promauth:/bin/bash' >> /etc/passwd && \
+ echo 'promauth:x:1000:' >> /etc/group && \
+ mkdir /home/promauth && \
+ chown -R promauth:promauth /home/promauth
+COPY bin/prometheus-auth /usr/bin/
+USER promauth
+CMD ["prometheus-auth"]