Add Dockerfile & build pipeline

.drone.yml

@@ -17,3 +17,57 @@ steps:
   when:
     event:
       - push
+- name: docker
+  image: thegeeklab/drone-docker-buildx
+  privileged: true
+  settings:
+    registry: git.ar21.de
+    username:
+      from_secret: REGISTRY_USER
+    password:
+      from_secret: REGISTRY_PASS
+    repo: git.ar21.de/yolokube/grafana-backuper
+    tags:
+      - latest
+      - ${DRONE_BUILD_NUMBER}
+    platforms:
+      - linux/arm64
+      - linux/amd64
+  when:
+    branch:
+      - main
+    event:
+      - push
+  depends_on:
+    - gofmt
+    - vuln-check
+- name: docker-build
+  image: thegeeklab/drone-docker-buildx
+  privileged: true
+  settings:
+    registry: git.ar21.de
+    username:
+      from_secret: REGISTRY_USER
+    password:
+      from_secret: REGISTRY_PASS
+    repo: git.ar21.de/yolokube/grafana-backuper
+    tags:
+      - latest
+      - ${DRONE_BUILD_NUMBER}
+    platforms:
+      - linux/arm64
+      - linux/amd64
+    dry_run: true
+  when:
+    branch:
+      exclude:
+        - main
+    event:
+      - push
+  depends_on:
+    - gofmt
+    - vuln-check
+when:
+  event:
+    exclude:
+      - pull_request

Dockerfile

@@ -0,0 +1,25 @@
+FROM golang:1.22.0-bookworm AS build
+
+# Create build workspace folder
+WORKDIR /workspace
+ADD . /workspace
+
+# Install updates and build tools
+RUN apt-get update --yes && \
+    apt-get install --yes build-essential
+
+# Build the actual binary
+RUN CGO_ENABLED=0 go build -o grafana-backuper main.go
+
+# -- -- -- -- -- --
+
+# Set up image to run the tool
+FROM alpine
+
+# Create main app folder to run from
+WORKDIR /app
+
+# Copy built binary from build image
+COPY --from=build /workspace/grafana-backuper /app
+
+ENTRYPOINT ["/app/grafana-backuper"]