adds ci-cd and Docker container

Dockerfile

@@ -0,0 +1,20 @@
+FROM golang:latest as builder
+
+ARG GO_CMD=funbot
+ENV CGO_ENABLED=0 \
+    GOARCH=amd64 \
+    GOOS=linux
+
+WORKDIR /app
+
+ADD . /app/
+
+RUN go build -ldflags "-s -w -extldflags '-static'" -o /main ./cmd/${GO_CMD}/
+
+FROM scratch
+COPY --chown=65534:0 --from=builder /main /
+
+USER 65534
+WORKDIR /
+
+CMD ["/main"]