Shell script builds and runs perfcomp

Author: zhouselena

.evergreen/perfcomp/README.md

@@ -53,3 +53,13 @@ generates markdown output after compare run (must be run after `compare`)
 Usage:
   perfcomp mdreport
 ```
+
+### Run via shell script
+
+Alternatively, you can run the perfcomp shell script. This script will run build and then run `compare`. From the root directory,
+
+```bash
+PERF_URI_PRIVATE_ENDPOINT="<perf_uri>" VERSION_ID="<version>" .evergreen/run-perf-comp.sh
+```
+
+If you would like to see a markdown preview of the report, you can also pass in `HEAD_SHA=""`. This will generate `.evergreen/perfcomp/perf-report.md`.

.evergreen/run-perf-comp.sh

@@ -60,3 +60,10 @@ fi
 
 : "${PERF_URI_PRIVATE_ENDPOINT:?Error: PERF_URI_PRIVATE_ENDPOINT must be set}"
 : "${VERSION_ID:?Error: VERSION_ID must be set}"
+
+./bin/perfcomp compare ${VERSION_ID}
+
+if [[ -n "${HEAD_SHA+set}" ]]; then
+  ./bin/perfcomp mdreport
+  rm perf-report.txt
+fi