Switch to photon base image (#68)

Dockerfile

@@ -1,51 +1,68 @@
-FROM golang:1.13
-WORKDIR /go/src/github.com/vmware-tanzu/carvel-kapp-controller/
+FROM photon:3.0
+
+RUN tdnf install -y tar wget gzip
+
+# adapted from golang docker image
+ENV PATH /usr/local/go/bin:$PATH
+ENV GOLANG_VERSION 1.13.13
+ENV GO_REL_ARCH linux-amd64
+ENV GO_REL_SHA 0b8573c2335bebef53e819ab8d323456dc2b94838bebdbd8cc6623bb8a6d77b7
 
-RUN apt-get -y update && apt-get install -y ca-certificates && update-ca-certificates
+RUN set eux; \
+    wget -O go.tgz "https://golang.org/dl/go${GOLANG_VERSION}.${GO_REL_ARCH}.tar.gz" --progress=dot:giga; \
+    echo "${GO_REL_SHA} *go.tgz" | sha256sum -c -; \
+    tar -C /usr/local -xzf go.tgz; \
+    rm go.tgz; \
+    go version
+
+ENV GOPATH /go
+ENV PATH $GOPATH/bin:$PATH
+RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 777 "$GOPATH"
+
+WORKDIR /go/src/github.com/vmware-tanzu/carvel-kapp-controller/
 
-# k14s
+# carvel
 RUN wget -O- https://github.com/k14s/ytt/releases/download/v0.30.0/ytt-linux-amd64 > /usr/local/bin/ytt && \
-  echo "456e58c70aef5cd4946d29ed106c2b2acbb4d0d5e99129e526ecb4a859a36145  /usr/local/bin/ytt" | shasum -c - && \
+  echo "456e58c70aef5cd4946d29ed106c2b2acbb4d0d5e99129e526ecb4a859a36145  /usr/local/bin/ytt" | sha256sum -c - && \
   chmod +x /usr/local/bin/ytt && ytt version
 
 RUN wget -O- https://github.com/k14s/kapp/releases/download/v0.34.0/kapp-linux-amd64 > /usr/local/bin/kapp && \
-  echo "e170193c40ff5dff9f9274c25048de1f50e23c69e8406df274fbb416d5862d7f  /usr/local/bin/kapp" | shasum -c - && \
+  echo "e170193c40ff5dff9f9274c25048de1f50e23c69e8406df274fbb416d5862d7f  /usr/local/bin/kapp" | sha256sum -c - && \
   chmod +x /usr/local/bin/kapp && kapp version
 
 RUN wget -O- https://github.com/k14s/kbld/releases/download/v0.24.0/kbld-linux-amd64 > /usr/local/bin/kbld && \
-  echo "63f06c428cacd66e4ebbd23df3f04214109bc44ee623c7c81ecb9aa35c192c65  /usr/local/bin/kbld" | shasum -c - && \
+  echo "63f06c428cacd66e4ebbd23df3f04214109bc44ee623c7c81ecb9aa35c192c65  /usr/local/bin/kbld" | sha256sum -c - && \
   chmod +x /usr/local/bin/kbld && kbld version
 
 RUN wget -O- https://github.com/k14s/imgpkg/releases/download/v0.2.0/imgpkg-linux-amd64 > /usr/local/bin/imgpkg && \
-  echo "57a73c4721c39f815408f486c1acfb720af82450996e2bfdf4c2c280d8a28dcc  /usr/local/bin/imgpkg" | shasum -c - && \
+  echo "57a73c4721c39f815408f486c1acfb720af82450996e2bfdf4c2c280d8a28dcc  /usr/local/bin/imgpkg" | sha256sum -c - && \
   chmod +x /usr/local/bin/imgpkg && imgpkg version
 
 RUN wget -O- https://github.com/vmware-tanzu/carvel-vendir/releases/download/v0.14.0/vendir-linux-amd64 > /usr/local/bin/vendir && \
-  echo "c224bdfe74df326d7e75b4c50669ec5976b95c0ff9a27d25c6e1833d0c781946  /usr/local/bin/vendir" | shasum -c - && \
+  echo "c224bdfe74df326d7e75b4c50669ec5976b95c0ff9a27d25c6e1833d0c781946  /usr/local/bin/vendir" | sha256sum -c - && \
   chmod +x /usr/local/bin/vendir && vendir version
 
 # helm
 RUN wget -O- https://get.helm.sh/helm-v2.17.0-linux-amd64.tar.gz > /helm && \
-  echo "f3bec3c7c55f6a9eb9e6586b8c503f370af92fe987fcbf741f37707606d70296  /helm" | shasum -c - && \
+  echo "f3bec3c7c55f6a9eb9e6586b8c503f370af92fe987fcbf741f37707606d70296  /helm" | sha256sum -c - && \
   mkdir /helm-unpacked && tar -C /helm-unpacked -xzvf /helm
 
 # sops
 RUN wget -O- https://github.com/mozilla/sops/releases/download/v3.6.1/sops-v3.6.1.linux > /usr/local/bin/sops && \
-  echo "b2252aa00836c72534471e1099fa22fab2133329b62d7826b5ac49511fcc8997  /usr/local/bin/sops" | shasum -c - && \
+  echo "b2252aa00836c72534471e1099fa22fab2133329b62d7826b5ac49511fcc8997  /usr/local/bin/sops" | sha256sum -c - && \
   chmod +x /usr/local/bin/sops && sops -v
 
 # kapp-controller
 COPY . .
 RUN CGO_ENABLED=0 GOOS=linux go build -ldflags=-buildid= -trimpath -o controller ./cmd/main.go
 
-# ---
-# Needs ubuntu for installing git/openssh
-FROM ubuntu:bionic
+# --- run image ---
+FROM photon:3.0
 
-RUN apt-get update && apt-get install -y git openssh-client && rm -rf /var/lib/apt/lists/*
+RUN tdnf install -y git openssh-clients shadow-tools sed
 
 RUN groupadd -g 2000 kapp-controller && useradd -r -u 1000 --create-home -g kapp-controller kapp-controller
-RUN chmod g+w /etc/ssl/certs/ca-certificates.crt && chgrp kapp-controller /etc/ssl/certs/ca-certificates.crt
+RUN chmod g+w /etc/pki/tls/certs/ca-bundle.crt && chgrp kapp-controller /etc/pki/tls/certs/ca-bundle.crt
 USER kapp-controller
 
 # Name it kapp-controller to identify it easier in process tree

pkg/config/global/configurer.go

@@ -17,7 +17,7 @@ const (
 	configMapName = "kapp-controller-config"
 
 	caCertsKey      = "caCerts"
-	systemCertsFile = "/etc/ssl/certs/ca-certificates.crt"
+	systemCertsFile = "/etc/pki/tls/certs/ca-bundle.crt"
 
 	httpProxyKey     = "httpProxy"
 	httpsProxyKey    = "httpsProxy"