chore: try to use sccache in CI (#345)

Author: addaleax

package-lock.json

@@ -75,7 +75,7 @@
     "adm-zip": "^0.4.14",
     "aws-sdk": "^2.674.0",
     "axios": "^0.19.2",
-    "boxednode": "^1.2.3",
+    "boxednode": "^1.3.0",
     "browserify": "^16.5.0",
     "chai": "^4.2.0",
     "command-exists": "^1.2.9",

package.json

@@ -32,7 +32,13 @@ class SignableCompiler {
       sourceFile: this.sourceFile,
       targetFile: this.targetFile,
       nodeVersionRange: this.nodeVersionRange,
-      namespace: 'mongosh'
+      namespace: 'mongosh',
+      env: {
+        ...process.env,
+        // Custom env vars for sccache:
+        AWS_ACCESS_KEY_ID: process.env.DEVTOOLS_CI_AWS_KEY,
+        AWS_SECRET_ACCESS_KEY: process.env.DEVTOOLS_CI_AWS_SECRET
+      }
     });
   }
 }

packages/build/src/signable-compiler.ts

@@ -14,7 +14,10 @@ RUN add-apt-repository ppa:ubuntu-toolchain-r/test
 RUN apt-get update
 RUN apt-get -y -qq install nodejs g++-6 rpm
 
-ENV CC=gcc-6
-ENV CXX=g++-6
+# Add sccache
+RUN curl -L https://github.com/mozilla/sccache/releases/download/0.2.13/sccache-0.2.13-x86_64-unknown-linux-musl.tar.gz | tar -C /usr/local/bin -xzvf - --strip=1 sccache-0.2.13-x86_64-unknown-linux-musl/sccache
+
+ENV CC="sccache gcc-6"
+ENV CXX="sccache g++-6"
 
 ENTRYPOINT [ "bash" ]