remove py27 testing, 1.26 and later drop python 2 support

Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>

Release.Jenkinsfile

@@ -2,7 +2,7 @@
 
 def dockerVersions = ['19.03.5', '18.09.9']
 def baseImages = ['alpine', 'debian']
-def pythonVersions = ['py27', 'py37']
+def pythonVersions = ['py37']
 
 pipeline {
     agent none
@@ -75,7 +75,7 @@ pipeline {
                     steps {
                         checkout scm
                         sh './script/setup/osx'
-                        sh 'tox -e py27,py37 -- tests/unit'
+                        sh 'tox -e py37 -- tests/unit'
                         sh './script/build/osx'
                         dir ('dist') {
                           checksum('docker-compose-Darwin-x86_64')
@@ -112,7 +112,7 @@ pipeline {
                     }
                     steps {
                         checkout scm
-                        bat 'tox.exe -e py27,py37 -- tests/unit'
+                        bat 'tox.exe -e py37 -- tests/unit'
                         powershell '.\\script\\build\\windows.ps1'
                         dir ('dist') {
                             checksum('docker-compose-Windows-x86_64.exe')
@@ -177,19 +177,14 @@ pipeline {
                     }
                     steps {
                         checkout scm
-                        withCredentials([[$class: "FileBinding", credentialsId: 'pypirc-docker-dsg-cibot', variable: 'PYPIRC']]) {
+                        withCredentials([file(credentialsId: 'pypirc-docker-dsg-cibot', variable: 'PYPIRC')]) {
                             sh """
-                                virtualenv venv-publish
-                                source venv-publish/bin/activate
+                                pip install --user twine wheel
                                 python setup.py sdist bdist_wheel
-                                pip install twine
                                 twine upload --config-file ${PYPIRC} ./dist/docker-compose-${env.TAG_NAME}.tar.gz ./dist/docker_compose-${env.TAG_NAME}-py2.py3-none-any.whl
                             """
                         }
                     }
-                    post {
-                        sh 'deactivate; rm -rf venv-publish'
-                    }
                 }
             }
         }
@@ -268,7 +263,6 @@ def buildRuntimeImage(baseImage) {
 
 def pushRuntimeImage(baseImage) {
     unstash "compose-${baseImage}"
-    sh 'echo -n "${DOCKERHUB_CREDS_PSW}" | docker login --username "${DOCKERHUB_CREDS_USR}" --password-stdin'
     sh "docker load -i dist/docker-compose-${baseImage}.tar"
     withDockerRegistry(credentialsId: 'dockerbuildbot-hub.docker.com') {
         sh "docker push docker/compose:${baseImage}-${env.TAG_NAME}"
@@ -283,18 +277,23 @@ def githubRelease() {
     withCredentials([string(credentialsId: 'github-compose-release-test-token', variable: 'GITHUB_TOKEN')]) {
         def prerelease = !( env.TAG_NAME ==~ /v[0-9\.]+/ )
         changelog = readFile "CHANGELOG.md"
-        def data = """{
-            \"tag_name\": \"${env.TAG_NAME}\",
-            \"name\": \"${env.TAG_NAME}\",
-            \"draft\": true,
-            \"prerelease\": ${prerelease},
-            \"body\" : \"${changelog}\"
-        """
-        echo $data
+
+        def info = [:]
+        info.tag_name = env.TAG_NAME
+        info.name = env.TAG_NAME
+        info.draft = true
+        info.prerelease = prerelease
+        info.body = changelog
+
+
+        writeFile file: 'release.json', text: groovy.json.JsonOutput.toJson(info)
+
+        // debug
+        sh("cat release.json")
 
         def url = "https://api.github.com/repos/docker/compose/releases"
         def upload_url = sh(returnStdout: true, script: """
-            curl -sSf -H 'Authorization: token ${GITHUB_TOKEN}' -H 'Accept: application/json' -H 'Content-type: application/json' -X POST -d '$data' $url") \\
+            curl -sSf -H 'Authorization: token ${GITHUB_TOKEN}' -H 'Accept: application/json' -H 'Content-type: application/json' -X POST --data-binary '@release.json' $url) \\
             | jq '.upload_url | .[:rindex("{")]'
         """)
         sh("""