add drone config to create artifact for release

Author: Salipa-Gurung

.drone.star

@@ -3,6 +3,8 @@ OC_CI_BUILDIFIER = "owncloudci/bazel-buildifier:latest"
 SONARSOURCE_SONAR_SCANNER_CLI = "sonarsource/sonar-scanner-cli:5.0"
 OC_CI_WAIT_FOR = "owncloudci/wait-for:latest"
 OCIS_IMAGE = "owncloud/ocis:5.0"
+PLUGINS_GITHUB_RELEASE = "plugins/github-release"
+OC_CI_ALPINE = "owncloudci/alpine:latest"
 
 dir = {
     "webConfig": "/drone/src/tests/drone/web.config.json",
@@ -12,7 +14,8 @@ def main(ctx):
     return checkStarlark() + \
            pnpmlint(ctx) + \
            unitTestPipeline(ctx) + \
-           e2eTests()
+           e2eTests() + \
+           releaseArtifacts()
 
 def checkStarlark():
     return [{
@@ -221,3 +224,51 @@ def ocisService():
             ],
         },
     ]
+
+def releaseArtifacts():
+    return [{
+        "kind": "pipeline",
+        "type": "docker",
+        "name": "create-artifacts",
+        "steps": installPnpm() + \
+                 serveExtension() + \
+                 [
+                     {
+                         "name": "check-dist",
+                         "image": OC_CI_ALPINE,
+                         "commands": [
+                             "ls -la dist",
+                         ],
+                     },
+                     {
+                         "name": "zip-artifacts",
+                         "image": OC_CI_ALPINE,
+                         "commands": [
+                             "if [ -d 'dist' ] && [ \"$(ls -A dist)\" ]; then cd dist && zip -r ../dicomviewer-viewer-${DRONE_TAG}.zip .; else echo 'Dist folder is empty or does not exist'; exit 1; fi",
+                             "md5sum dicomviewer-${DRONE_TAG}.zip > md5sum.txt",
+                             "sha256sum dicomviewer-${DRONE_TAG}.zip > sha256sum.txt",
+                         ],
+                     },
+                     {
+                         "name": "publish",
+                         "image": PLUGINS_GITHUB_RELEASE,
+                         "settings": {
+                             "api_key": {
+                                 "from_secret": "GITHUB_TOKEN",
+                             },
+                             "files": [
+                                 "dicomviewer-${DRONE_TAG}.zip",
+                                 "md5sum.txt",
+                                 "sha256sum.txt",
+                             ],
+                             "overwrite": True,
+                         },
+                     },
+                 ],
+        "trigger": {
+            "ref": [
+                "refs/tags/**",
+                "refs/pull/**",  # remove this
+            ],
+        },
+    }]