Update test step.

.drone.yml

@@ -11,8 +11,25 @@ steps:
 - name: test
   image: rust:1-slim-buster
   commands:
-    - apt-get update -y && apt-get install -y libavcodec-dev libavformat-dev libavutil-dev libavdevice-dev pkg-config clang llvm
-    - cargo build
-    - cargo test
+  - apt-get update -y
+  - apt-get install -y wget libssl-dev pkg-config
+  - apt-get install -y libavcodec-dev libavformat-dev libavutil-dev libavdevice-dev clang llvm
+  - apt-get install -y python3 python3-pip
+  - pip3 install cfscrape
+  - wget -O sccache.tar.gz https://github.com/mozilla/sccache/releases/download/0.2.13/sccache-0.2.13-x86_64-unknown-linux-musl.tar.gz
+  - tar zxvf sccache.tar.gz
+  - export RUSTC_WRAPPER=$(pwd)/sccache-0.2.13-x86_64-unknown-linux-musl/sccache
+  - cargo build
+  - cargo test
+  - $(pwd)/sccache-0.2.13-x86_64-unknown-linux-musl/sccache --show-stats
+  environment:
+    AWS_ACCESS_KEY_ID:
+      from_secret: sccache_s3_access_key
+    AWS_SECRET_ACCESS_KEY:
+      from_secret: sccache_s3_secret_key
+    SCCACHE_BUCKET: cache
+    SCCACHE_ENDPOINT:
+      from_secret: sccache_s3_endpoint
+    SCCACHE_S3_USE_SSL: true
 
 ...