first docker container version

Dockerfile

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+# build the backend
+FROM golang:1.23-alpine AS backend-builder
+
+# set the workdir
+WORKDIR /usr/src/backend
+
+# install the dependencies
+COPY backend/go.mod backend/go.sum ./
+RUN go mod download && go mod verify
+
+# build the source-code
+COPY backend .
+RUN go build -ldflags "-s -w" -o dist/backend
+
+# build the frontend
+FROM node:current AS client-builder
+
+WORKDIR /usr/src/client
+
+COPY client/package*.json ./
+RUN npm ci
+
+COPY client .
+
+RUN npm run build
+
+FROM alpine:latest
+
+WORKDIR /usr/bin/app
+
+# copy the backend
+COPY --from=backend-builder /usr/src/backend/dist/backend backend
+
+# copy the client-html
+COPY --from=client-builder /usr/src/client/out html
+
+# Create a group and user
+RUN addgroup -S golunteer && adduser -S golunteer -G golunteer
+
+EXPOSE 61016
+EXPOSE 80
+
+# Tell docker that all future commands should run as the appuser user
+USER golunteer
+
+# run the app
+CMD ["app"]