add periodic docker container build

.devcontainer/devcontainer.json

@@ -0,0 +1,12 @@
+{
+    "name": "apcupsd-exporter",
+    "image": "golang:1.19",
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "golang.go"
+            ]
+        }
+    },
+    "postCreateCommand": "go install honnef.co/go/tools/cmd/staticcheck@latest"
+}

.github/workflows/linux-test.yml

@@ -13,19 +13,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.17]
+        go-version: [1.19]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
 
     steps:
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
         go-version: ${{ matrix.go-version }}
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Run tests
-      run: go test -race ./...
+      run: cd src && go test -race ./...

.github/workflows/release-docker.yml

@@ -0,0 +1,36 @@
+name: Release Docker
+
+on:
+  schedule:
+    - cron: "00 01 * * 0"
+  push:
+    branches:
+      - "main"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository_owner }}/apcupsd-exporter
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          file: docker/Dockerfile
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest

.github/workflows/static-analysis.yml

@@ -12,18 +12,18 @@ jobs:
   build:
     strategy:
       matrix:
-        go-version: [1.17]
+        go-version: [1.19]
     runs-on: ubuntu-latest
 
     steps:
     - name: Set up Go
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
         go-version: ${{ matrix.go-version }}
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install staticcheck
       run: go install honnef.co/go/tools/cmd/staticcheck@latest
@@ -32,7 +32,7 @@ jobs:
       run: staticcheck -version
 
     - name: Run staticcheck
-      run: staticcheck ./...
-
-    - name: Run go vet
-      run: go vet ./...
+      run: |
+        cd src
+        staticcheck ./...
+        go vet ./...

README.md

@@ -1,14 +1,32 @@
-# apcupsd_exporter [![Linux Test Status](https://github.com/mdlayher/apcupsd_exporter/workflows/Linux%20Test/badge.svg)](https://github.com/mdlayher/apcupsd_exporter/actions)  [![GoDoc](http://godoc.org/github.com/mdlayher/apcupsd_exporter?status.svg)](http://godoc.org/github.com/mdlayher/apcupsd_exporter)
+# apcupsd_exporter [![Linux Test Status](https://github.com/bossm8/apcupsd_exporter/workflows/Linux%20Test/badge.svg)](https://github.com/bossm8/apcupsd_exporter/actions)  [![GoDoc](http://godoc.org/github.com/mdlayher/apcupsd_exporter?status.svg)](http://godoc.org/github.com/mdlayher/apcupsd_exporter)
+
+## Notes
+
+This is a fork of the original repository from [mdlayher](https://github.com/mdlayher/apcupsd_exporter) with an added docker built.
+
+## Docker Usage
+
+Per default the docker container runs `--help` start the apcupsd_exporter like this (e.g.)
+
+```bash
+docker run \
+      -it --rm -p 9162:9162 \
+      --add-host host.docker.internal:host-gateway \
+      ghcr.io/bossm8/apcupsd-exporter:latest -apcupsd.addr host.docker.internal:3551 
+```
+
+
+## Original README
 
 Command `apcupsd_exporter` provides a Prometheus exporter for the
 [apcupsd](http://www.apcupsd.org/) Network Information Server (NIS). MIT
 Licensed.
 
-## Usage
+### Usage
 
 Available flags for `apcupsd_exporter` include:
 
-```
+```bash
 $ ./apcupsd_exporter -h
 Usage of ./apcupsd_exporter:
   -apcupsd.addr string

docker/Dockerfile

@@ -0,0 +1,19 @@
+FROM golang:latest
+
+COPY ./src /src
+WORKDIR /src
+
+RUN go install && \
+    CGO_ENABLED=0 go build -o apcups-exporter cmd/apcupsd_exporter/main.go && \
+    chmod +x apcups-exporter
+
+FROM alpine:latest
+
+COPY --from=0 /src/apcups-exporter /usr/sbin/apcups-exporter
+
+RUN adduser -s /bin/sh -H -D apcexp
+
+USER apcexp
+
+ENTRYPOINT ["apcups-exporter"]
+CMD ["--help"]

src/apcupsdexporter_test.go

@@ -1,7 +1,7 @@
 package apcupsdexporter
 
 import (
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -27,7 +27,7 @@ func testCollector(t *testing.T, collector prometheus.Collector) []byte {
 	}
 	defer resp.Body.Close()
 
-	buf, err := ioutil.ReadAll(resp.Body)
+	buf, err := io.ReadAll(resp.Body)
 	if err != nil {
 		t.Fatalf("failed to read server response: %v", err)
 	}

src/go.mod

@@ -1,6 +1,6 @@
 module github.com/mdlayher/apcupsd_exporter
 
-go 1.17
+go 1.19
 
 require (
 	github.com/mdlayher/apcupsd v0.0.0-20220314153302-72ccd80310d1