feat: goreleaser

.gitignore

@@ -1,2 +1,3 @@
 openvpn_exporter
 .idea
+dist

.goreleaser.yml

@@ -0,0 +1,21 @@
+# This is an example goreleaser.yaml file with some sane defaults.
+# Make sure to check the documentation at http://goreleaser.com
+before:
+  hooks:
+  - go mod download
+builds:
+- env:
+  - CGO_ENABLED=0
+  goarch:
+  - amd64
+  goos:
+  - linux
+  - darwin
+dockers:
+- image_templates:
+  - "caarlos0/openvpn-exporter:latest"
+  - "caarlos0/openvpn-exporter:{{ .Tag }}"
+  build_flag_templates:
+  - "--label=org.label-schema.schema-version=1.0"
+  - "--label=org.label-schema.version={{ .Version }}"
+  - "--label=org.label-schema.name={{ .ProjectName }}"

Dockerfile

@@ -1,42 +1,4 @@
-# BUILD:
-# docker build --force-rm=true -t openvpn_exporter .
-
-# RUN:
-# docker run -it -p 9176:9176 -v /path/to/openvpn_server.status:/etc/openvpn_exporter/server.status openvpn_exporter
-
-FROM golang as builder
-
-RUN mkdir /app
-RUN mkdir /go/src/app
-ADD . /go/src/app
-WORKDIR /go/src/app
-
-# Go dep
-RUN go get -d ./...
-
-# Build a standalone binary
-RUN set -ex && \
-  CGO_ENABLED=0 go build \
-        -tags netgo \
-        -o /app/openvpn_exporter \
-        -v -a \
-        -ldflags '-extldflags "-static"' && \
-  ls
-
-# Create the second stage with a basic image.
-# this will drop any previous
-# stages (defined as `FROM <some_image> as <some_name>`)
-# allowing us to start with a fat build image and end up with
-# a very small runtime image.
-
-FROM busybox
-
-# add compiled binary
-COPY --from=builder /app/openvpn_exporter /openvpn_exporter
-
-# add a default file to be processed
-ADD examples/server2.status /etc/openvpn_exporter/server.status
-
-# run
-EXPOSE 9176
-CMD ["/openvpn_exporter", "-openvpn.status_paths", "/etc/openvpn_exporter/server.status"]
+FROM scratch
+COPY openvpn_exporter /bin/openvpn_exporter
+ENTRYPOINT ["/bin/openvpn_exporter"]
+CMD [ "-h" ]