alright I lied, one more try. gitea strips file extensions?!

Jenkinsfile

@@ -28,7 +28,7 @@ pipeline {
                 branch "release"
             }
             environment {
-                GITEA_PAT = credentials('0bd7c8f5-046c-44b9-9c77-7a28a219ae31')
+                GITEA = credentials('0bd7c8f5-046c-44b9-9c77-7a28a219ae31')
             }
             steps{
                 sh """
@@ -37,25 +37,28 @@ pipeline {
                     noext=\${fullfilename%.*}
                     curl -X 'POST' \
                         -o release.json \
-                      'https://gitea.arg.rip/api/v1/repos/greyn/jenkins-playground/releases?token=$GITEA_PAT' \
+                      'https://gitea.arg.rip/api/v1/repos/greyn/jenkins-playground/releases' \
                       -H 'accept: application/json' \
+                      -H 'Authorization: token $GITEA_PSW' \
                       -H 'Content-Type: application/json' \
                       -d '{
-                      "body": "\$(date)",
+                      "body": "automatic build at '"\$(date)"'",
                       "draft": false,
                       "name": "$BUILD_NUMBER",
                       "prerelease": false,
                       "tag_name": "$BUILD_NUMBER",
                       "target_commitish": "$GIT_COMMIT"
                     }'
+                    cat release.json
                     releaseid=\$(cat release.json | jq .id)
 
-                    postURL = "https://gitea.arg.rip/api/v1/repos/greyn/jenkins-playground/releases/\$releaseid/assets?name=\$noext&token=$GITEA_PAT"
+                    postURL="https://gitea.arg.rip/api/v1/repos/greyn/jenkins-playground/releases/\$releaseid/assets?name=\$noext"
                     curl -X 'POST' \
                        \$postURL \
                       -H 'accept: application/json' \
+                      -H 'Authorization: token $GITEA_PSW' \
                       -H 'Content-Type: multipart/form-data' \
-                      -F 'attachment=@\$fullfilename'
+                      -F "attachment=@\$fullfilename;type=application/nupkg"
 
                     releaseid=null
                     filename=null