\psset{griddots=0,gridlabels=8pt,subgriddiv=5}
\psset{xunit=10mm,yunit=10mm}
\newcommand{\clr}{black}
\psset{fillcolor=white}
\psset{fillstyle=solid}
\psset{linecolor=\clr}
\psset{framearc=.5}
\psset{framesep=20pt}
\psset{arrowsize=10pt}
\begin{pspicture}(12,6)
%	\psgrid
	\rput(2.5,5){\psframebox{\textcolor{\clr}{Gitlab-ci server}}}
	\rput(2.5,1){\psframebox{\textcolor{\clr}{Local workstation}}}
	\rput(8.5,3){\psframebox{\textcolor{\clr}{Gitlab-ci-multi-runner}}}
	\pscurve[fillstyle=none]{->}(4.6,5)(7.2,5)(8.5,3.9)
	\pscurve[fillstyle=none]{<-}(3,4.1)(4,3.2)(5.8,3)
	\pscurve[fillstyle=none]{<-}(8,2.1)(7.7,1.4)(8.5,.8)(9.3,1.4)(9,2.1)
	\psline{->}(1,1.9)(1,4.1)
	\rput(7,5.3){build trigger}
	\rput(.5,3){push}
	\rput(4,2.6){build result}
	\rput(8.5,.5){build}
\end{pspicture}