added Jenkinsfile, moved together with Dockerfile into automation folder

having the automation files in an empty folder accelerates docker build.
Also, I think these files are not related to the source code and as such should live in their own space

automation/Dockerfile-q7s

@@ -0,0 +1,18 @@
+FROM ubuntu:focal
+
+RUN apt-get update
+RUN apt-get --yes upgrade
+RUN apt-get --yes install cmake libgpiod-dev xz-utils nano curl
+
+# Q7S root filesystem, required for cross-compilation.
+RUN mkdir -p /usr/rootfs; \
+curl https://buggy.irs.uni-stuttgart.de/eive/tools/cortexa9hf-neon-xiphos-linux-gnueabi.tar.gz \
+    | tar -xz -C /usr/rootfs
+
+# Cross compiler
+RUN mkdir -p /usr/tools; \
+curl https://buggy.irs.uni-stuttgart.de/eive/tools/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf.tar.gz \
+    | tar -xz -C /usr/tools
+
+ENV Q7S_SYSROOT="/usr/rootfs/cortexa9hf-neon-xiphos-linux-gnueabi"
+ENV PATH=$PATH:"/usr/tools/gcc-arm-8.3-2019.03-x86_64-arm-linux-gnueabihf/bin"

automation/Jenkinsfile

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+pipeline {
+    agent any
+    stages {
+        stage('Build Container') {
+            when {
+                changeset "automation/Dockerfile-q7s"
+                branch 'develop'
+            }
+            steps {
+                sh 'docker build -t eive-fsw-build-q7s:gcc8 - < automation/Dockerfile-q7s'
+
+            }
+        }
+        stage('Clean') {
+            when {
+                anyof {
+                    changelog 'cleanCI'
+                    changeset '*.cmake'
+                    changeset 'CMakeLists.txt'
+                }
+            }
+            steps {
+                sh 'rm -rf build-q7s-debug'
+            }
+        }
+        stage('Build Q7S') {
+            agent {
+                docker {
+                    image 'eive-fsw-build-q7s:gcc8'
+                    reuseNode true
+                }
+            }
+            steps {
+                dir('build-q7s-debug') {
+                    sh 'cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug -DFSFW_OSAL=linux ..'
+                    sh 'cmake --build . -j'
+                }
+            }
+        }
+        stage('Deploy') {
+            when {
+                tag 'v*.*.*'
+            }
+            steps {
+                sh 'echo Deploying'
+            }
+        }
+    }
+}