meltwater cache is removed, s3_cache is used

.drone.star

@@ -6,7 +6,6 @@ NOTIFICATIONS = 3
 ALPINE_GIT = "alpine/git:latest"
 DEEPDRIVER_DOCKER_ORACLE_XE_11G = "deepdiver/docker-oracle-xe-11g:latest"
 DRONE_CLI_ALPINE = "drone/cli:alpine"
-MELTWATER_DRONE_CACHE = "meltwater/drone-cache:v1"
 MINIO_MC = "minio/mc:RELEASE.2021-03-23T05-46-11Z"
 OC_CI_ALPINE = "owncloudci/alpine:latest"
 OC_CI_BAZEL_BUILDIFIER = "owncloudci/bazel-buildifier"
@@ -27,6 +26,7 @@ PLUGINS_GH_PAGES = "plugins/gh-pages:1"
 PLUGINS_GIT_ACTION = "plugins/git-action:1"
 PLUGINS_GITHUB_RELEASE = "plugins/github-release:1"
 PLUGINS_S3 = "plugins/s3"
+PLUGINS_S3_CACHE = "plugins/s3-cache:1"
 PLUGINS_SLACK = "plugins/slack:1"
 SELENIUM_STANDALONE_CHROME_DEBUG = "selenium/standalone-chrome-debug:3.141.59"
 SELENIUM_STANDALONE_FIREFOX_DEBUG = "selenium/standalone-firefox-debug:3.141.59"
@@ -2935,26 +2935,20 @@ def genericCache(name, action, mounts, cache_key):
 
     step = {
         "name": "%s_%s" % (action, name),
-        "image": MELTWATER_DRONE_CACHE,
-        "environment": {
-            "AWS_ACCESS_KEY_ID": {
-                "from_secret": "cache_s3_access_key",
-            },
-            "AWS_SECRET_ACCESS_KEY": {
-                "from_secret": "cache_s3_secret_key",
-            },
-        },
+        "image": PLUGINS_S3_CACHE,
         "settings": {
             "endpoint": {
                 "from_secret": "cache_s3_endpoint",
             },
-            "bucket": "cache",
-            "region": "us-east-1",  # not used at all, but fails if not given!
-            "path_style": "true",
-            "cache_key": cache_key,
             "rebuild": rebuild,
             "restore": restore,
             "mount": mounts,
+            "access_key": {
+                "from_secret": "cache_s3_access_key",
+            },
+            "secret_key": {
+                "from_secret": "cache_s3_secret_key",
+            },
         },
     }
     return step