diff --git a/orchestrator/packages/common/src/validations/schemas/grading-job-config.ts b/orchestrator/packages/common/src/validations/schemas/grading-job-config.ts
index 41f60633..b9d82622 100644
--- a/orchestrator/packages/common/src/validations/schemas/grading-job-config.ts
+++ b/orchestrator/packages/common/src/validations/schemas/grading-job-config.ts
@@ -18,7 +18,10 @@ const bashGradingScriptCommand = {
     on_complete: {
       anyOf: [
         {
-          $ref: "https://orca-schemas.com/grading-job-config/grading-script-command",
+          type: "array",
+          items: {
+            $ref: "https://orca-schemas.com/grading-job-config/grading-script-command",
+          }
         },
         { type: "string" },
         { type: "number" },
@@ -27,7 +30,10 @@ const bashGradingScriptCommand = {
     on_fail: {
       anyOf: [
         {
-          $ref: "https://orca-schemas.com/grading-job-config/grading-script-command",
+          type: "array",
+          items: {
+            $ref: "https://orca-schemas.com/grading-job-config/grading-script-command",
+          }
         },
         { type: "string" },
         { type: "number" },
diff --git a/orchestrator/packages/db/run-migration b/orchestrator/packages/db/run-migration
index 87dc9ee8..1bbf15a8 100755
--- a/orchestrator/packages/db/run-migration
+++ b/orchestrator/packages/db/run-migration
@@ -8,7 +8,7 @@ fi
 migration_name="$1"
 container_name='postgres-migration'
 
-docker run --rm -p 5432:5432 -v db-data:/var/lib/postgresql/data \
+docker run --rm -p 5434:5432 -v db-data:/var/lib/postgresql/data \
   -e POSTGRES_PASSWORD=password --name "$container_name" -d postgres:10 > /dev/null
 
 if [[ $? -ne 0  ]]; then
@@ -16,6 +16,6 @@ if [[ $? -ne 0  ]]; then
   exit 1
 fi
 
-export POSTGRES_URL=postgresql://postgres:password@localhost
+export POSTGRES_URL=postgresql://postgres:password@localhost:5434
 npx prisma migrate dev --name $1
 docker stop "$container_name" > /dev/null