Update Dockerfiles to make this version runnable

Should now have pairity in terms of system utilities and scripts for
checking services

Dockerfile

@@ -1,8 +1,22 @@
-ARG REPO=library
-FROM ${REPO}/busybox:latest
-WORKDIR /root/
+FROM ${REPO}/alpine:latest
+RUN mkdir /app
+WORKDIR /app/
 
+# Copy minitor in
 ARG ARCH=amd64
 COPY ./minitor-go ./minitor
 
+# Add common checking tools
+RUN apk --no-cache add bash==4.4.19-r1 curl==7.64.0-r3 jq==1.6-r0
+
+# Add minitor user for running as non-root
+RUN addgroup -S minitor && adduser -S minitor -G minitor
+
+# Copy scripts
+COPY ./scripts /app/scripts
+RUN chmod -R 755 /app/scripts
+
+# Drop to non-root user
+USER minitor
+
 ENTRYPOINT [ "./minitor" ]