Speed up build (#9993)

* configure MySQL to use tmpfs

* simplify use of COMPOSE_PROJECT_NAME, and set envs vs. overriding config.json, fix error output, --no-ansi

* cmd/mattermost/commands/*_test.go: ignore MM_SQLSETTINGS_DATASOURCE from the env

* clean up exit 1 semantics

build/docker-compose.yml

@@ -3,7 +3,6 @@ services:
   mysql:
     image: "mysql:5.7"
     restart: always
-    container_name: mysql-$DCNAME-$BUILD_NUMBER
     networks:
       - mm-test
     environment:
@@ -12,20 +11,22 @@ services:
       MYSQL_PASSWORD: mostest
       MYSQL_USER: mmuser
       MYSQL_DATABASE: mattermost_test
+    tmpfs: /var/lib/mysql
+    volumes:
+     - "./docker/mysql.conf.d:/etc/mysql/conf.d"
   postgres:
     image: "postgres:9.4"
     restart: always
-    container_name: postgres-$DCNAME-$BUILD_NUMBER
     networks:
       - mm-test
     environment:
       POSTGRES_USER: mmuser
       POSTGRES_PASSWORD: mostest
       POSTGRES_DB: mattermost_test
+    tmpfs: /var/lib/postgresql/data
   minio:
     image: "minio/minio:RELEASE.2018-05-25T19-49-13Z"
     command: "server /data"
-    container_name: minio-$DCNAME-$BUILD_NUMBER
     networks:
       - mm-test
     environment:
@@ -34,13 +35,11 @@ services:
   inbucket:
     image: "jhillyerd/inbucket:release-1.2.0"
     restart: always
-    container_name: inbucket-$DCNAME-$BUILD_NUMBER
     networks:
       - mm-test
   openldap:
     image: "osixia/openldap:1.1.6"
     restart: always
-    container_name: openldap-$DCNAME-$BUILD_NUMBER
     networks:
       - mm-test
     environment:
@@ -50,7 +49,6 @@ services:
       LDAP_ADMIN_PASSWORD: "mostest"
   elasticsearch:
     image: "mattermost/mattermost-elasticsearch-docker:6.5.1"
-    container_name: elasticsearch-$DCNAME-$BUILD_NUMBER
     networks:
       - mm-test
     environment:
@@ -61,7 +59,6 @@ services:
     image: redis
     networks:
       - mm-test
-    container_name: redis-$DCNAME-$BUILD_NUMBER
 
   start_dependencies:
     image: mattermost/mattermost-wait-for-dep:latest