Add docker

.github/workflows/build.yaml

@@ -64,6 +64,29 @@ jobs:
               });
             }
 
+      - name: Log in to the Container registry
+        if: ${{ github.event_name == 'release' }}
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and Push image
+        if: ${{ github.event_name == 'release' }}
+        run: |
+          VERSION=$(git describe --tags --abbrev=0)
+
+          docker build -t ghcr.io/${{ github.repository }}:latest .
+          docker tag ghcr.io/${{ github.repository }}:latest ghcr.io/${{ github.repository }}:${VERSION}
+          docker tag ghcr.io/${{ github.repository }}:latest ghcr.io/${{ github.repository }}:${VERSION:0:4}
+          docker tag ghcr.io/${{ github.repository }}:latest ghcr.io/${{ github.repository }}:${VERSION:0:2}
+
+          docker push ghcr.io/${{ github.repository }}:latest
+          docker push ghcr.io/${{ github.repository }}:${VERSION}
+          docker push ghcr.io/${{ github.repository }}:${VERSION:0:4}
+          docker push ghcr.io/${{ github.repository }}:${VERSION:0:2}
+
       - name: Trigger homebrew tap update
         if: ${{ github.event_name == 'release' }}
         run: |

Dockerfile

@@ -0,0 +1,13 @@
+FROM golang:alpine AS builder
+# Git is required to fetch the dependencies
+RUN apk update && apk add --no-cache git
+WORKDIR /build
+COPY . .
+RUN go get -d -v
+RUN go build -o /build/datasubst
+
+
+FROM scratch
+COPY --from=builder /build/datasubst /datasubst
+ENTRYPOINT ["/datasubst"]
+

README.md

@@ -19,6 +19,12 @@ Alternatively, you can install a development version using:
 go get github.com/marcelocarlos/datasubst
 ```
 
+If you don't want to install it, you can run `datasubst` via Docker instead:
+
+```shell
+docker run --rm ghcr.io/marcelocarlos/datasubst:v0
+```
+
 ## Usage
 
 ```shell