feat: remove unused Dockerfile

Dockerfile

@@ -1,19 +0,0 @@
-FROM debian:12-slim as kubectl
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends \
-        ca-certificates \
-        curl \
-    && rm -rf /var/lib/apt/lists/*
-RUN V="$(curl -sSL https://dl.k8s.io/release/stable.txt)" \
-    && curl -Lo /kubectl "https://dl.k8s.io/release/$V/bin/linux/amd64/kubectl"
-
-FROM debian:12-slim
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends \
-        ca-certificates \
-    && rm -rf /var/lib/apt/lists/*
-COPY --from=kubectl --chmod=0755 /kubectl /usr/local/bin/
-COPY k8sdeploy.sh /usr/local/bin/
-RUN useradd -m app
-USER app
-ENTRYPOINT ["k8sdeploy.sh"]