Remove exporter user

Author: mattlord

Dockerfile

@@ -1,15 +1,9 @@
 FROM debian:10-slim
-RUN useradd -u 20001 postgres_exporter \
-    && apt-get update \
+RUN apt-get update \
     && apt-get -y install socat ca-certificates \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists
 
-FROM scratch
-
-COPY --from=0 /etc/passwd /etc/passwd
-USER postgres_exporter
-
 ARG binary
 
 COPY $binary /postgres_exporter