Add production deployment: Dockerfile, docker-compose, deploy script

- Dockerfile: multi-stage build (golang:1.25-alpine → alpine:3.21), linux/amd64
- infra/mariadb: docker-compose + init SQL for reanimator DB/user
- infra/reanimator: docker-compose for reanimator-api (Gitea registry)
- deploy.sh: local build → push to git.mchus.pro → SSH deploy

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.25-alpine AS builder
+
+WORKDIR /build
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -ldflags="-s -w" -o reanimator-api ./cmd/reanimator-api
+
+
+FROM alpine:3.21
+
+RUN apk add --no-cache tzdata ca-certificates
+
+WORKDIR /app
+
+COPY --from=builder /build/reanimator-api ./reanimator-api
+COPY --from=builder /build/migrations ./migrations
+
+EXPOSE 9999
+
+ENTRYPOINT ["./reanimator-api"]