adds docker file #14

Dockerfile

@@ -0,0 +1,35 @@
+# Build the manager binary
+FROM golang:1.17 as builder
+
+WORKDIR /git-secrets
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY . .
+
+# Build
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o git-secrets main.go
+
+FROM bash
+WORKDIR /git-secrets
+
+RUN apk add --no-cache bash
+RUN apk add curl
+RUN apk add git
+
+RUN mkdir -p bin
+
+COPY --from=builder /git-secrets/git-secrets bin/git-secrets
+
+RUN adduser -D gitsecrets
+RUN chown -R 1000:1000 .
+USER gitsecrets
+
+ENV PATH="/git-secrets/bin:${PATH}"
+
+ENTRYPOINT ["git-secrets"]