Remove building Docker containers with MariaDB

In vitessio#9518 MariaDB has been
deprecated, which means that at this point for the future Vitess v16 we
don't want to publish containers with MariaDB anymore.

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

Makefile

@@ -285,7 +285,7 @@ $(PROTO_GO_OUTS): minimaltools install_protoc-gen-go proto/*.proto
 # Please read docker/README.md to understand the different available images.
 
 # This rule builds the bootstrap images for all flavors.
-DOCKER_IMAGES_FOR_TEST = mariadb mariadb103 mysql57 mysql80 percona57 percona80
+DOCKER_IMAGES_FOR_TEST = mysql57 mysql80 percona57 percona80
 DOCKER_IMAGES = common $(DOCKER_IMAGES_FOR_TEST)
 BOOTSTRAP_VERSION=14
 ensure_bootstrap_version:
@@ -323,7 +323,7 @@ endef
 docker_base:
 	${call build_docker_image,docker/base/Dockerfile,vitess/base}
 
-DOCKER_BASE_SUFFIX = mysql80 mariadb mariadb103 percona57 percona80
+DOCKER_BASE_SUFFIX = mysql80 percona57 percona80
 DOCKER_BASE_TARGETS = $(addprefix docker_base_, $(DOCKER_BASE_SUFFIX))
 $(DOCKER_BASE_TARGETS): docker_base_%:
 	${call build_docker_image,docker/base/Dockerfile.$*,vitess/base:$*}
@@ -333,7 +333,7 @@ docker_base_all: docker_base $(DOCKER_BASE_TARGETS)
 docker_lite:
 	${call build_docker_image,docker/lite/Dockerfile,vitess/lite}
 
-DOCKER_LITE_SUFFIX = mysql57 ubi7.mysql57 mysql80 ubi7.mysql80 mariadb mariadb103 percona57 ubi7.percona57 percona80 ubi7.percona80 alpine testing ubi8.mysql80 ubi8.arm64.mysql80
+DOCKER_LITE_SUFFIX = mysql57 ubi7.mysql57 mysql80 ubi7.mysql80 percona57 ubi7.percona57 percona80 ubi7.percona80 testing ubi8.mysql80 ubi8.arm64.mysql80
 DOCKER_LITE_TARGETS = $(addprefix docker_lite_,$(DOCKER_LITE_SUFFIX))
 $(DOCKER_LITE_TARGETS): docker_lite_%:
 	${call build_docker_image,docker/lite/Dockerfile.$*,vitess/lite:$*}
@@ -357,7 +357,7 @@ $(DOCKER_VTTESTSERVER_TARGETS): docker_vttestserver_%:
 docker_vttestserver: $(DOCKER_VTTESTSERVER_TARGETS)
 # This rule loads the working copy of the code into a bootstrap image,
 # and then runs the tests inside Docker.
-# Example: $ make docker_test flavor=mariadb
+# Example: $ make docker_test flavor=mysql80
 docker_test:
 	go run test.go -flavor $(flavor)
 

doc/DockerBuild.md

@@ -31,7 +31,6 @@ Then you can run our build script for the `lite` image which extracts the Vitess
     vitess$ docker pull vitess/bootstrap:mysql56   # MySQL Community Edition 5.6
     vitess$ docker pull vitess/bootstrap:percona57 # Percona Server 5.7
     vitess$ docker pull vitess/bootstrap:percona   # Percona Server
-    vitess$ docker pull vitess/bootstrap:mariadb   # MariaDB
     ```
 
     **Note:** If you have already downloaded the `vitess/bootstrap:<flavor>`
@@ -50,7 +49,6 @@ Then you can run our build script for the `lite` image which extracts the Vitess
     vitess$ make docker_base_mysql56
     vitess$ make docker_base_percona57
     vitess$ make docker_base_percona
-    vitess$ make docker_base_mariadb
     ```
 
 1.  Build the `vitess/lite[:<flavor>]` image.
@@ -65,7 +63,6 @@ Then you can run our build script for the `lite` image which extracts the Vitess
     vitess$ make docker_lite_mysql56
     vitess$ make docker_lite_percona57
     vitess$ make docker_lite_percona
-    vitess$ make docker_lite_mariadb
     ```
 
 1.  Re-tag the image under your personal repository, then upload it.

docker/bootstrap/README.md

@@ -6,8 +6,6 @@ after successfully running `bootstrap.sh` and `dev.env`.
 The `vitess/bootstrap` image comes in different flavors:
 
 * `vitess/bootstrap:common`    - dependencies that are common to all flavors
-* `vitess/bootstrap:mariadb`   - bootstrap image for MariaDB 10.2
-* `vitess/bootstrap:mariadb103`- bootstrap image for MariaDB 10.3
 * `vitess/bootstrap:mysql57`   - bootstrap image for MySQL 5.7
 * `vitess/bootstrap:mysql80`   - bootstrap image for MySQL 8.0
 * `vitess/bootstrap:percona57` - bootstrap image for Percona Server 5.7