fixing docker and deployment instructions

mindforge.cronjob/Dockerfile

@@ -14,9 +14,10 @@ COPY . .
 # Build statically for Linux
 RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o mindforge-cronjob ./cmd/mindforge.cronjob
 
-# Use scratch to avoid QEMU: no foreign-arch commands to emulate
-FROM scratch
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+# Use alpine to provide git (QEMU overhead for apk add is minimal)
+FROM alpine:latest
+RUN apk --no-cache add git ca-certificates openssh-client
+
 COPY --from=builder /app/mindforge-cronjob /app/mindforge-cronjob
 ENV GIT_REPOSITORY=""
 ENV GEMINI_API_KEY=""