Switch to multi-stage dockerfile for building kaniko

deploy/Dockerfile

@@ -14,8 +14,14 @@
 
 # Builds the static Go image to execute in a Kubernetes job
 
+FROM golang
+WORKDIR /go/src/github.com/GoogleContainerTools/kaniko
+RUN apt-get update && apt-get install -y make
+COPY . .
+RUN make -B
+
 FROM scratch
-COPY out/executor /kaniko/executor
+COPY --from=0 /go/src/github.com/GoogleContainerTools/kaniko/out/executor /kaniko/executor
 COPY files/ca-certificates.crt /kaniko/ssl/certs/
 COPY files/docker-credential-gcr /usr/local/bin/
 COPY files/config.json /root/.docker/

deploy/executor-release.yaml

@@ -1,31 +1,6 @@
 steps:
-  # First, install make
-  - name: "gcr.io/google-appengine/debian9"
-    args: ["sh", "-c", "apt-get update && apt-get install -y make"]
-    volumes:
-    - name: "make"
-      path: "/usr/bin"
-  - name: "gcr.io/google-appengine/debian9"
-    args: ["sh", "-c", "cp -r . /kaniko/ && mkdir -p /workspace/go/src/github.com/GoogleContainerTools/ && cp -r /kaniko/ /workspace/go/src/github.com/GoogleContainerTools/"]
-    volumes:
-    - name: "make"
-      path: "/usr/bin"
-  # Then, build the binary
-  - name: "gcr.io/google-appengine/golang"
-    args: ["sh", "-c", "make"]
-    volumes:
-    - name: "make"
-      path: "/usr/bin"
-    dir: go/src/github.com/GoogleContainerTools/kaniko
-    env: ["GOPATH=/workspace/go/"]
   # First, build kaniko
   - name: "gcr.io/cloud-builders/docker"
     args: ["build", "-f", "deploy/Dockerfile",
            "-t", "gcr.io/kaniko-project/executor:${COMMIT_SHA}", "."]
-    dir: go/src/github.com/GoogleContainerTools/kaniko  
-  # Then, build kaniko:debug
-  - name: "gcr.io/cloud-builders/docker"
-    args: ["build", "-f", "deploy/Dockerfile_debug",
-           "-t", "gcr.io/kaniko-project/executor:debug-${COMMIT_SHA}", "."] 
-    dir: go/src/github.com/GoogleContainerTools/kaniko
-images: ["gcr.io/kaniko-project/executor:${COMMIT_SHA}", "gcr.io/kaniko-project/executor:debug-${COMMIT_SHA}"]
+images: ["gcr.io/kaniko-project/executor:${COMMIT_SHA}"]