Reduce dev rebuild times for single profile docker images (#432)

- reduce duplicate calls to `fmt` target
- skip file dedup for single profile docker image builds

Author: bpkroth

docker/benchbase/devcontainer/build-in-container.sh

@@ -32,7 +32,7 @@ function build_profile() {
     mkdir -p target/$profile
     # Build the profile without tests (we did that separately).
     mvn -T 2C -B --file pom.xml package -D descriptors=src/main/assembly/dir.xml -P $profile \
-        $SKIP_TEST_ARGS $EXTRA_MAVEN_ARGS -D buildDirectory=target/$profile
+        -Dfmt.skip $SKIP_TEST_ARGS $EXTRA_MAVEN_ARGS -D buildDirectory=target/$profile
     # Copy the resultant output to the profiles directory.
     cp -rlv target/$profile/benchbase-$profile/benchbase-$profile profiles/$profile
     # Later the container entrypoint will move into this directory to run it, so
@@ -105,7 +105,7 @@ fi
 # Fetch resources serially to work around mvn races with downloading the same
 # file in multiple processes (mvn uses *.part instead of use tmpfile naming).
 for profile in ${BENCHBASE_PROFILES}; do
-    mvn -T2C -B --file pom.xml -D buildDirectory=target/$profile $EXTRA_MAVEN_ARGS process-resources dependency:copy-dependencies
+    mvn -T2C -B --file pom.xml -Dfmt.skip -D buildDirectory=target/$profile $EXTRA_MAVEN_ARGS process-resources dependency:copy-dependencies
 done
 
 # Make sure that we've built the base stuff (and test) before we build individual profiles.
@@ -120,7 +120,13 @@ for profile in ${BENCHBASE_PROFILES}; do
 done
 wait
 
-deduplicate_profile_files
+FIRST_BENCHBASE_PROFILE=$(echo "$BENCHBASE_PROFILES" | awk '{ print $1 }')
+if [ "$FIRST_BENCHBASE_PROFILE" == "$BENCHBASE_PROFILES" ]; then
+    echo "INFO: Single profile build: $FIRST_BENCHBASE_PROFILE. Skipping file dedup."
+else
+    echo "INFO: deduplicating files in combo build."
+    deduplicate_profile_files
+fi
 
 for profile in ${BENCHBASE_PROFILES}; do
     test_profile_build "$profile" || exit 1