Fix Drone CI environment variables (#430)

## What changes were proposed in this pull request?

Fix Drone CI environment variables.

## How was this patch tested?

CI/CD.

Reviewed-on: #430
Co-authored-by: Amab <juanmi1982@gmail.com>
Co-committed-by: Amab <juanmi1982@gmail.com>

.drone.yml

@@ -21,7 +21,6 @@ steps:
 
   - name: build
     image: git.cuernodehipnos.es/marown/android-sdk-docker:latest
-    privileged: true
     environment:
       GRADLE_USER_HOME: /drone/src/.gradle
     commands:
@@ -102,7 +101,6 @@ steps:
 
   - name: build
     image: git.cuernodehipnos.es/marown/android-sdk-docker:latest
-    privileged: true
     environment:
       GRADLE_USER_HOME: /drone/src/.gradle
     commands:
@@ -113,6 +111,16 @@ steps:
     image: git.cuernodehipnos.es/marown/android-sdk-docker:latest
     environment:
       GRADLE_USER_HOME: /drone/src/.gradle
+      RELEASE_KEY_ALIAS:
+        from_secret: release_key_alias
+      RELEASE_KEY_PASSWORD:
+        from_secret: release_key_password
+      RELEASE_KEYSTORE_BASE64:
+        from_secret: release_keystore_base64
+      RELEASE_STORE_FILE:
+        from_secret: release_store_file
+      RELEASE_STORE_PASSWORD:
+        from_secret: release_store_password
     commands:
       # Encrypt keystore & set $RELEASE_KEYSTORE_BASE64 environment variable in Drone CI
       # - openssl base64 -A -in keystore.jks
@@ -121,7 +129,7 @@ steps:
       # Assemble APK
       - ./gradlew assembleRelease
 
-  - name: gitea_release
+  - name: gitea-release
     image: plugins/gitea-release
     settings:
       api_key: