Add Dockerfile(s) for frontend and backend, renamed the existing one to Dockerfile.embedded

Dockerfile.backend

@@ -0,0 +1,22 @@
+FROM golang:1.19.1 AS builder
+
+### Copy Go code
+WORKDIR /src/
+COPY . .
+
+### Build executables
+RUN go build -o /app/webapi ./cmd/webapi
+
+
+### Create final container
+FROM debian:bullseye
+
+### Inform Docker about which port is used
+EXPOSE 3000 4000
+
+### Copy the build executable from the builder image
+WORKDIR /app/
+COPY --from=builder /app/webapi ./
+
+### Executable command
+CMD ["/app/webapi"]

Dockerfile.frontend

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+FROM node:lts as builder
+
+### Copy Vue.js code
+WORKDIR /app
+COPY webui webui
+
+### Build Vue.js into plain HTML/CSS/JS
+WORKDIR /app/webui
+RUN npm run build-prod
+
+
+### Create final container
+FROM nginx:stable
+
+### Copy the (built) app from the builder image
+COPY --from=builder /app/webui/dist /usr/share/nginx/html