Update mysql

[tianon]

Changes:

• docker-library/mysql@bc6e37a: Merge pull request escape database underscore wildcard mysql#500 from Istador/escape_database_wildcard
• docker-library/mysql@7a87af0: Escape database underscore wildcard
• docker-library/mysql@a769034: Merge pull request Add initial GitHub Actions CI mysql#667 from docker-library/github-actions
• docker-library/mysql@ab66888: Add initial GitHub Actions CI

[github-actions]

Diff for 910dfd8:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index dc9ddaa..d754cd8 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -2,13 +2,13 @@ Maintainers: Tianon Gravi <admwiggin@gmail.com> (@tianon), Joseph Ferguson <yosi
 GitRepo: https://github.com/docker-library/mysql.git
 
 Tags: 5.6.48, 5.6
-GitCommit: d2ba5f1fd5c1f4002253b80575de9c759d22bb1e
+GitCommit: bc6e37a2bed792b1c4fc6ab1ec3ce316e6a5f061
 Directory: 5.6
 
 Tags: 5.7.30, 5.7, 5
-GitCommit: 7397711170daed7ebba3bf373af143e5179906fc
+GitCommit: bc6e37a2bed792b1c4fc6ab1ec3ce316e6a5f061
 Directory: 5.7
 
 Tags: 8.0.20, 8.0, 8, latest
-GitCommit: fef511444a9d2867c9e4e20f5b4062bc071c20a2
+GitCommit: bc6e37a2bed792b1c4fc6ab1ec3ce316e6a5f061
 Directory: 8.0
diff --git a/mysql_5.6/docker-entrypoint.sh b/mysql_5.6/docker-entrypoint.sh
index 8db3567..6845ee4 100755
--- a/mysql_5.6/docker-entrypoint.sh
+++ b/mysql_5.6/docker-entrypoint.sh
@@ -284,7 +284,7 @@ docker_setup_db() {
 
 		if [ -n "$MYSQL_DATABASE" ]; then
 			mysql_note "Giving user ${MYSQL_USER} access to schema ${MYSQL_DATABASE}"
-			docker_process_sql --database=mysql <<<"GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;"
+			docker_process_sql --database=mysql <<<"GRANT ALL ON \`${MYSQL_DATABASE//_/\\_}\`.* TO '$MYSQL_USER'@'%' ;"
 		fi
 
 		docker_process_sql --database=mysql <<<"FLUSH PRIVILEGES ;"
diff --git a/mysql_5/docker-entrypoint.sh b/mysql_5/docker-entrypoint.sh
index 8db3567..6845ee4 100755
--- a/mysql_5/docker-entrypoint.sh
+++ b/mysql_5/docker-entrypoint.sh
@@ -284,7 +284,7 @@ docker_setup_db() {
 
 		if [ -n "$MYSQL_DATABASE" ]; then
 			mysql_note "Giving user ${MYSQL_USER} access to schema ${MYSQL_DATABASE}"
-			docker_process_sql --database=mysql <<<"GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;"
+			docker_process_sql --database=mysql <<<"GRANT ALL ON \`${MYSQL_DATABASE//_/\\_}\`.* TO '$MYSQL_USER'@'%' ;"
 		fi
 
 		docker_process_sql --database=mysql <<<"FLUSH PRIVILEGES ;"
diff --git a/mysql_latest/docker-entrypoint.sh b/mysql_latest/docker-entrypoint.sh
index 8db3567..6845ee4 100755
--- a/mysql_latest/docker-entrypoint.sh
+++ b/mysql_latest/docker-entrypoint.sh
@@ -284,7 +284,7 @@ docker_setup_db() {
 
 		if [ -n "$MYSQL_DATABASE" ]; then
 			mysql_note "Giving user ${MYSQL_USER} access to schema ${MYSQL_DATABASE}"
-			docker_process_sql --database=mysql <<<"GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;"
+			docker_process_sql --database=mysql <<<"GRANT ALL ON \`${MYSQL_DATABASE//_/\\_}\`.* TO '$MYSQL_USER'@'%' ;"
 		fi
 
 		docker_process_sql --database=mysql <<<"FLUSH PRIVILEGES ;"