Add tanka to build-image

Signed-off-by: Jack Baldry <[email protected]>

Author: jdbaldry

build-image/Dockerfile

@@ -15,8 +15,18 @@ RUN git clone https://github.com/jsonnet-bundler/jsonnet-bundler /jsonnet-bundle
     git checkout v0.2.0 && \
     make install
 
+# Build tanka
+FROM golang:1.14.1-alpine3.11 as tk-builder
+ARG TANKA_VERSION=0.11.1
+ARG TANKA_CHECKSUM="3b253ca7d7bf01189604c10a8f7cead20a553ddc04c813f0f836d80338cfad71  /usr/bin/tk"
+RUN apk add --no-cache curl
+RUN curl -fSL -o "/usr/bin/tk" "https://github.com/grafana/tanka/releases/download/v${TANKA_VERSION}/tk-linux-amd64"
+RUN echo "${TANKA_CHECKSUM}" | sha256sum -c || (printf "wanted: %s\n   got: %s\n" "${TANKA_CHECKSUM}" "$(sha256sum /usr/bin/tk)"; exit 1)
+RUN chmod +x /usr/bin/tk
+
 FROM alpine:3.11
 RUN apk add --no-cache git make libgcc libstdc++ zip
 COPY --from=jsonnet-builder /usr/bin/jsonnetfmt /usr/bin
 COPY --from=jsonnet-builder /usr/bin/jsonnet /usr/bin
 COPY --from=jb-builder /go/bin/jb /usr/bin
+COPY --from=tk-builder /usr/bin/tk /usr/bin