feat: package gdu in docker container

.github/workflows/docker.yml

@@ -0,0 +1,37 @@
+name: Build and publish a Docker image
+
+on:
+  push:
+    branches: ['master']
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,15 @@
+FROM docker.io/library/golang:1.20 as builder
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN make build-static
+
+FROM scratch
+
+COPY --from=builder /app/dist/gdu /opt/gdu
+
+ENTRYPOINT ["/opt/gdu"]

Makefile

@@ -16,7 +16,7 @@ ifeq ($(shell uname -s),Darwin)
 	TAR := gtar # brew install gnu-tar
 endif
 
-all: clean tarball build-all man clean-uncompressed-dist shasums
+all: clean tarball build-all build-docker man clean-uncompressed-dist shasums
 
 run:
 	go run $(PACKAGE)/$(CMD_GDU)
@@ -38,6 +38,10 @@ build-static:
 	mkdir -p dist
 	GOFLAGS="$(GOFLAGS_STATIC)" CGO_ENABLED=0 go build -ldflags="$(LDFLAGS)" -o dist/$(NAME) $(PACKAGE)/$(CMD_GDU)
 
+build-docker:
+	@echo "Version: " $(VERSION)
+	docker build . --tag ghcr.io/dundee/gdu:$(VERSION)
+
 build-all:
 	@echo "Version: " $(VERSION)
 	-mkdir dist

README.md

@@ -26,7 +26,11 @@ Using curl:
     chmod +x gdu_linux_amd64
     mv gdu_linux_amd64 /usr/bin/gdu
 
-Or see the [installation page](./INSTALL.md) for other ways how to install Gdu to your system.
+See the [installation page](./INSTALL.md) for other ways how to install Gdu to your system.
+
+Or you can use Gdu directly via Docker:
+
+    docker run --rm --init --interactive --tty --privileged --volume /:/mnt/root ghcr.io/dundee/gdu /mnt/root
 
 ## Usage