Add Dockerfile

cmd/gcp/Dockerfile

@@ -0,0 +1,24 @@
+FROM golang:1.23.1-alpine3.19@sha256:ac67716dd016429be8d4c2c53a248d7bcdf06d34127d3dc451bda6aa5a87bc06 AS builder
+
+ARG GOFLAGS="-trimpath -buildvcs=false -buildmode=exe"
+ENV GOFLAGS=$GOFLAGS
+
+# Move to working directory /build
+WORKDIR /build
+
+# Copy and download dependency using go mod
+COPY go.mod .
+COPY go.sum .
+RUN go mod download
+
+# Copy the code into the container
+COPY . .
+
+# Build the application
+RUN go build -o bin/sctfe-gcp ./cmd/gcp
+
+# Build release image
+FROM alpine:3.20.2@sha256:0a4eaa0eecf5f8c050e5bba433f58c052be7587ee8af3e8b3910ef9ab5fbe9f5
+
+COPY --from=builder /build/bin/sctfe-gcp /bin/sctfe-gcp
+ENTRYPOINT ["/bin/sctfe-gcp"]