Merge pull request #7679 from bsdkurt/3.0.0

Bring run-in-docker.sh to date for 3.0

Author: HugoMario

docker-entrypoint.sh

@@ -10,7 +10,7 @@ cli="${GEN_DIR}/modules/swagger-codegen-cli"
 codegen="${cli}/target/swagger-codegen-cli.jar"
 cmdsrc="${cli}/src/main/java/io/swagger/codegen/cmd"
 
-pattern="@Command(name = \"$1\""
+pattern="${1^} implements Runnable"
 if expr "x$1" : 'x[a-z][a-z-]*$' > /dev/null && fgrep -qe "$pattern" "$cmdsrc"/*.java || expr "$1" = 'help' > /dev/null; then
     # If ${GEN_DIR} has been mapped elsewhere from default, and that location has not been built
     if [[ ! -f "${codegen}" ]]; then