Attempting database install fix

.github/scripts/install.sh

@@ -31,7 +31,22 @@ apt-get install -y gstreamer1.0-plugins-base \
   postgresql-client
 
 # Creating database for testing
-psql -c 'CREATE DATABASE libretime;' -U postgres
-psql -c "CREATE USER libretime WITH PASSWORD 'libretime';" -U postgres
-psql -c 'GRANT CONNECT ON DATABASE libretime TO libretime;' -U postgres
-psql -c 'ALTER USER libretime CREATEDB;' -U postgres
+    setupAirtimePostgresUser() {
+        # here-doc to execute this block as postgres user
+        su postgres <<'EOF'
+        set +e
+        count=$(psql -d postgres -tAc "SELECT count(*) FROM pg_roles WHERE rolname='airtime';")
+        if [[ $count -eq 0 ]]; then
+            psql -d postgres -tAc "CREATE USER airtime WITH ENCRYPTED PASSWORD 'airtime'; ALTER USER airtime CREATEDB; CREATE DATABASE libretime; GRANT CONNECT ON DATABASE libretime TO libretime;"
+            [[ $? -eq 0 ]] && 
+                  echo "Created airtime user in PostgreSQL" || 
+                  echo "$0:${FUNCNAME}(): ERROR: Can't create airtime user in PostgreSQL!"
+        else
+            echo "airtime user already exists in PostgreSQL"
+        fi
+        set -e
+# don't indent this!
+EOF
+    }
+
+setupAirtimePostgresUser