feat: switch to distroless image

Dockerfile

@@ -1,5 +1,5 @@
 #build stage
-FROM golang:1.17-buster AS builder
+FROM golang:1.17 AS builder
 RUN mkdir -p /go/src/app
 WORKDIR /go/src/app
 
@@ -10,19 +10,9 @@ COPY . /go/src/app
 RUN go build -ldflags="-w -s" -o health_exporter
 
 #final stage
-FROM debian:buster-slim
-
-ENV TZ=UTC \
-    PATH="/app:${PATH}"
-
-RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y --no-install-recommends \
-      ca-certificates && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
+FROM gcr.io/distroless/base
 WORKDIR /app
-
 COPY --from=builder /go/src/app/health_exporter /app/health_exporter
-ENTRYPOINT /app/health_exporter
-LABEL Name=health_exporter Version=1.0.0
+CMD ["/app/health_exporter"]
+LABEL Name=health_exporter
 EXPOSE 9876

charts/health-exporter/Chart.yaml

@@ -4,5 +4,5 @@ home: https://github.com/snapp-cab/health-exporter
 sources:
   - https://github.com/snapp-cab/health-exporter.git
 type: application
-version: 0.3.1
-appVersion: 1.0.0
+version: 0.3.2
+appVersion: 0.3.0

charts/health-exporter/values.yaml

@@ -1,7 +1,8 @@
 # Default values for health-exporter.
 image:
-  repository: "spc35771/health-exporter"
-  tag: "latest"
+  repository: "ghcr.io/snapp-incubator/health-exporter"
+  # defaults to chart appVersion
+  tag: ""
 replicas: 1
 resources:
   limits: