chore: add kotsadm-operator skaffold cache

Signed-off-by: Dan Stough <dans@replicated.com>

Makefile

@@ -110,3 +110,4 @@ project-pact-tests:
 .PHONY: cache
 cache:
 	docker build -f hack/dev/Dockerfile.skaffoldcache . -t kotsadm:cache
+	docker build -f kotsadm/operator/Dockerfile.skaffoldcache kotsadm/operator -t kotsadm-operator:cache

hack/dev/Dockerfile.skaffoldcache

@@ -10,4 +10,4 @@ COPY cmd ./cmd
 COPY pkg ./pkg
 COPY kotskinds ./kotskinds
 
-RUN make kotsadm
+RUN make kotsadm

kotsadm/operator/Dockerfile.skaffold

@@ -1,4 +1,22 @@
-FROM golang:1.16 as deps
+FROM kotsadm-operator:cache AS builder
+
+ENV PROJECTPATH=/go/src/github.com/replicatedhq/kots/kotsadm/operator
+WORKDIR $PROJECTPATH
+ADD Makefile ./
+ADD Makefile.build ./
+ADD go.mod ./
+ADD go.sum ./
+ADD cmd ./cmd
+ADD pkg ./pkg
+
+RUN make build
+
+FROM debian:buster
+RUN apt-get update && apt-get install -y --no-install-recommends curl ca-certificates \
+  && rm -rf /var/lib/apt/lists/*
+
+ENV GO111MODULE=on
+ENV PATH="/usr/local/bin:$PATH"
 
 # Install Kubectl 1.14
 ENV KUBECTL_1_14_VERSION=v1.14.9
@@ -50,15 +68,6 @@ RUN curl -L "https://get.helm.sh/helm-v3.4.2-linux-amd64.tar.gz" -o /tmp/helm.ta
   chmod a+x linux-amd64/helm && \
   mv linux-amd64/helm "/usr/local/bin/helm3.4.2"
 
-ENV PROJECTPATH=/go/src/github.com/replicatedhq/kots/kotsadm/operator
-WORKDIR $PROJECTPATH
-ADD Makefile ./
-ADD Makefile.build ./
-ADD go.mod ./
-ADD go.sum ./
-ADD cmd ./cmd
-ADD pkg ./pkg
-
-RUN make build
+COPY --from=builder /go/src/github.com/replicatedhq/kots/kotsadm/operator/bin/kotsadm-operator .
 
-ENTRYPOINT ["./bin/kotsadm-operator"]
+ENTRYPOINT ["/kotsadm-operator"]

kotsadm/operator/Dockerfile.skaffoldcache

@@ -0,0 +1,12 @@
+FROM golang:1.16 as deps
+
+ENV PROJECTPATH=/go/src/github.com/replicatedhq/kots/kotsadm/operator
+WORKDIR $PROJECTPATH
+COPY Makefile ./
+COPY Makefile.build ./
+COPY go.mod ./
+COPY go.sum ./
+COPY cmd ./cmd
+COPY pkg ./pkg
+
+RUN make build