add update proc in build script

docs/install_centos_6.sh

@@ -8,6 +8,7 @@ sudo -E yum install epel-release yum-utils -y
 sudo -E rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
 curl https://download.mono-project.com/repo/centos6-stable.repo | sudo -E tee /etc/yum.repos.d/mono-centos6-stable.repo
 curl --silent --location https://rpm.nodesource.com/setup_10.x | sudo -E bash -
+sudo -E yum update -y
 sudo -E yum install nodejs git gcc gcc-c++ sqlite-devel readline-devel openssl-devel wget mono-complete -y
 sudo -E npm install pm2 -g
 

docs/install_centos_7.sh

@@ -8,6 +8,7 @@ sudo -E yum install epel-release yum-utils -y
 sudo -E rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF"
 curl https://download.mono-project.com/repo/centos7-stable.repo | sudo -E tee /etc/yum.repos.d/mono-centos7-stable.repo
 curl --silent --location https://rpm.nodesource.com/setup_10.x | sudo -E bash -
+sudo -E yum update -y
 sudo -E yum install nodejs git gcc gcc-c++ sqlite-devel readline-devel openssl-devel wget mono-complete -y
 sudo -E npm install pm2 -g
 

docs/install_ubnutu_14.sh

@@ -6,6 +6,7 @@ sudo -E apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0
 sudo apt-get install -y apt-transport-https
 echo "deb http://download.mono-project.com/repo/ubuntu stable-trusty main" | sudo -E tee /etc/apt/sources.list.d/mono-official-stable.list
 curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
+sudo -E apt-get upgrade -y
 sudo -E apt-get install -y curl git build-essential libreadline-dev libsqlite3-dev mono-complete nodejs
 sudo -E npm install pm2 -g
 

docs/install_ubnutu_16.sh

@@ -6,6 +6,7 @@ sudo -E apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0
 sudo apt-get install -y apt-transport-https
 echo "deb http://download.mono-project.com/repo/ubuntu stable-xenial main" | sudo -E tee /etc/apt/sources.list.d/mono-official-stable.list
 curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
+sudo -E apt-get upgrade -y
 sudo -E apt-get install -y curl git build-essential libreadline-dev libsqlite3-dev mono-complete nodejs
 sudo -E npm install pm2 -g
 

docs/install_ubnutu_18.sh

@@ -5,6 +5,7 @@
 sudo -E apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
 echo "deb http://download.mono-project.com/repo/ubuntu stable-bionic main" | sudo -E tee /etc/apt/sources.list.d/mono-official-stable.list
 curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
+sudo -E apt-get upgrade -y
 sudo -E apt-get install -y curl git build-essential libreadline-dev libsqlite3-dev mono-complete nodejs
 sudo -E npm install pm2 -g