Merge pull request #5 from nohn/build_docker_image_via_github_actions

Build docker image via GitHub actions

.github/workflows/ci.yaml

@@ -0,0 +1,23 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+
+jobs:
+  docker-build-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Pull Code'
+        uses: actions/checkout@main
+      - name: 'Login to GitHub Container Registry'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{github.actor}}
+          password: ${{secrets.GITHUB_TOKEN}}        
+      - name: 'Build Inventory Image'
+        run: |
+          docker build . --tag ghcr.io/$GITHUB_REPOSITORY_OWNER/downdetector-exporter:latest
+          docker push ghcr.io/$GITHUB_REPOSITORY_OWNER/downdetector-exporter:latest

.gitignore

@@ -1,2 +1,3 @@
 downdetector-credentials.yaml
 downdetector-exporter
+*~

Dockerfile

@@ -0,0 +1,18 @@
+FROM golang:1.19 AS build-stage
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY *.go ./
+RUN CGO_ENABLED=0 GOOS=linux go build -o /downdetector-exporter
+
+FROM gcr.io/distroless/base-debian12 AS build-release-stage
+
+WORKDIR /
+COPY --from=build-stage /downdetector-exporter /downdetector-exporter
+EXPOSE 9313
+USER nonroot:nonroot
+ENTRYPOINT ["/downdetector-exporter"]
+

README.md

@@ -110,6 +110,51 @@ METRICS_PATH
 LOG_LEVEL
 ```
 
+#### Running in Docker Compose
+
+Example of running in docker compose using some the above variables
+
+```
+services:
+  downdetector-exporter:
+    container_name: downdetector-exporter
+    image: ghcr.io/kic68/downdetector-exporter
+    restart: always
+    environment:
+      - COMPANY_IDS=23456,12345,34567
+      - DD_USERNAME=client-id
+      - DD_PASSWORD=secret-token
+```
+
+#### Running in Kubernetes
+
+Example of running in kubernetes:
+
+```
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: downdetector-exporter
+spec:
+  replicas: 1
+  strategy: {}
+  template:
+    spec:
+      containers:
+        - env:
+            - name: COMPANY_IDS
+              value: "23456,12345,34567"
+            - name: DD_USERNAME
+              value: client-id
+            - name: DD_PASSWORD
+              value: secret-token
+          image: ghcr.io/kic68/downdetector-exporter
+          name: downdetector-exporter
+          resources: {}
+      restartPolicy: Always
+status: {}
+```
+
 ### Grafana dashboard
 
 There's a grafana_dashboard.json file in the repository which can be imported to Grafana.