Added possibility deploy with k3s

infra/application/Dockerfile

@@ -0,0 +1,45 @@
+# ================================
+# Stage 1: сборка Vue
+# ================================
+FROM node:20-alpine AS frontend
+
+WORKDIR /app
+
+COPY frontend/package*.json ./
+RUN npm ci
+
+COPY frontend/ ./
+RUN npm run build
+
+# ================================
+# Stage 2: сборка Go
+# ================================
+FROM golang:1.26-bookworm AS backend
+
+WORKDIR /app
+
+# зависимости отдельно — используем кэш слоёв
+COPY backend/go.mod backend/go.sum ./
+RUN go mod download
+
+# исходники
+COPY backend/ ./
+
+# встраиваем собранную статику Vue
+COPY --from=frontend /app/dist ./src/api/dist
+# Миграции кладём туда, откуда Go их ищет
+COPY backend/migrations ./migrations
+# сборка бинарника
+RUN CGO_ENABLED=0 GOOS=linux go build -o server ./src/
+
+# ================================
+# Stage 3: финальный образ
+# ================================
+FROM scratch
+
+COPY --from=backend /app/server /server
+COPY --from=backend /app/migrations /migrations
+COPY --from=backend /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=backend /usr/share/zoneinfo /usr/share/zoneinfo
+
+ENTRYPOINT ["/server"]