Merge component 'packaging' from git@github.com:docker/docker-ce-packaging 19.03

Author: GordonTheTurtle

components/packaging/common.mk

@@ -2,7 +2,7 @@ ARCH=$(shell uname -m)
 BUILDTIME=$(shell date -u -d "@$${SOURCE_DATE_EPOCH:-$$(date +%s)}" --rfc-3339 ns 2> /dev/null | sed -e 's/ /T/')
 DEFAULT_PRODUCT_LICENSE:=Community Engine
 DOCKER_GITCOMMIT:=abcdefg
-GO_VERSION:=1.12.12
+GO_VERSION:=1.12.15
 PLATFORM=Docker Engine - Community
 SHELL:=/bin/bash
 VERSION?=0.0.0-dev

components/packaging/deb/gen-deb-ver

@@ -7,7 +7,7 @@ origVersion=$VERSION
 [[ $# < 2 ]] && echo 'not enough args' && exit 1
 
 DATE_COMMAND="date"
-if [[ $(uname) -eq "Darwin" ]]; then
+if [[ $(uname) == "Darwin" ]]; then
     DATE_COMMAND="docker run --rm alpine date"
 fi
 

components/packaging/rpm/gen-rpm-ver

@@ -6,7 +6,7 @@ VERSION=$2
 [[ $# < 2 ]] && echo 'not enough args' && exit 1
 
 DATE_COMMAND="date"
-if [[ $(uname) -eq "Darwin" ]]; then
+if [[ $(uname) == "Darwin" ]]; then
     DATE_COMMAND="docker run --rm alpine date"
 fi
 

components/packaging/static/gen-static-ver

@@ -9,7 +9,7 @@ if [ -z "$ENGINE_DIR" ] || [ -z "$VERSION" ]; then
 fi
 
 DATE_COMMAND="date"
-if [[ $(uname) -eq "Darwin" ]]; then
+if [[ $(uname) == "Darwin" ]]; then
     DATE_COMMAND="docker run --rm alpine date"
 fi
 GIT_COMMAND="git -C $ENGINE_DIR"