add Dockerfile & up readme

Dockerfile

@@ -0,0 +1,37 @@
+FROM golang:1.22 as builder
+
+RUN set -eux; \
+    apt update; \
+    apt install nodejs npm -y; \
+    git clone https://github.com/lejianwen/rustdesk-api; \
+    #先编译后台
+    git clone https://github.com/lejianwen/rustdesk-api-web; \
+    cd rustdesk-api-web; \
+    npm install; \
+    npm run build; \
+    cd ..; \
+    mkdir -p rustdesk-api/resources/admin; \
+    cp -ar rustdesk-api-web/dist/* rustdesk-api/resources/admin; \
+        cd rustdesk-api; \
+        go mod tidy; \
+        go install github.com/swaggo/swag/cmd/swag@latest; \
+    go env -w GO111MODULE=on;\
+    go env -w CGO_ENABLED=1;\
+    go env -w GOOS=linux;\
+    go env -w GOARCH=amd64;\
+    go env -w CGO_LDFLAGS="-static"; \
+    go build -o release/apimain cmd/apimain.go; \
+    cp -ar resources release/; \
+    mkdir -p release/resources/public; \
+    cp -ar docs release/; \
+    cp -ar conf release/; \
+    mkdir -p release/data; \
+    mkdir -p release/runtime;
+
+
+FROM alpine
+WORKDIR /app
+COPY --from=builder /go/rustdesk-api/release /app/
+
+EXPOSE 21114
+CMD ["./apimain"]