ci: s/archlinux/centos/ && add pull pipeline

.drone.yml

@@ -1,12 +1,43 @@
 ---
 kind: pipeline
 type: docker
-name: build-single-step
+name: pull
 
 platform:
   os: linux
   arch: amd64
 
+trigger:
+  branch: [development]
+  event: [push]
+
+steps:
+- name: pull-centos8
+  pull: always
+  image: centos:centos8.1.1911
+  depends_on: [clone]
+  commands:
+  - uname -r
+
+- name: pull-alpine
+  pull: always
+  image: alpine
+  depends_on: [clone]
+  commands:
+  - uname -r
+
+---
+kind: pipeline
+type: docker
+name: build-single-step
+
+platform:
+  os: linux
+  arch: amd64
+
+depends_on:
+- pull
+
 trigger:
   branch: [development]
   event: [push]
@@ -14,9 +45,9 @@ trigger:
 steps:
 - name: build
   pull: always
-  image: immawanderer/archlinux:latest
+  image: centos:centos8.1.1911
   commands:
-  - pacman -Sy --needed --noconfirm perl wget
+  - dnf install -y perl wget
   - perl src/fastnetmon_build.pl --install_dependency_packages_only
   - perl src/fastnetmon_build.pl --build_gcc_only
   - perl src/fastnetmon_build.pl --build_dependencies_only
@@ -32,6 +63,9 @@ platform:
   os: linux
   arch: amd64
 
+depends_on:
+- pull
+
 trigger:
   branch: [development]
   event: [push]
@@ -39,23 +73,23 @@ trigger:
 steps:
 - name: install_required_packaged
   pull: always
-  image: immawanderer/archlinux:latest
+  image: centos:centos8.1.1911
   commands:
-  - pacman -Sy --needed --noconfirm perl wget
+  - dnf install -y perl wget
   - perl src/fastnetmon_build.pl --install_dependency_packages_only
 
 - name: install_gcc
   pull: always
-  image: immawanderer/archlinux:latest
+  image: centos:centos8.1.1911
   commands:
-  - pacman -Sy --needed --noconfirm perl wget
+  - dnf install -y perl wget
   - perl src/fastnetmon_build.pl --build_gcc_only
 
 - name: install_dependencies
   pull: always
-  image: immawanderer/archlinux:latest
+  image: centos:centos8.1.1911
   commands:
-  - pacman -Sy --needed --noconfirm perl wget
+  - dnf install -y perl wget
   - perl src/fastnetmon_build.pl --build_dependencies_only
   - perl src/fastnetmon_build.pl --use-git-master --build_fastnetmon_only
   - perl src/scripts/build_libary_bundle.pl /opt/fastnetmon_libraries_bundle.tar.gz