[TASK] runTests.sh: Don't mount home, passwd, group

The patch changes runTests.sh and the container
definition to avoid mounting users home, /etc/passwd
and /etc/group. yarn based setups need some special
treatment but in the end bow to shell power, too.

Change-Id: I4e5665d31c5bef4e046e992eddd534ae597cce31
Resolves: #96253
Releases: main, 11.5, 10.4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72517
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

Build/Scripts/runTests.sh

@@ -18,8 +18,6 @@ setUpDockerComposeDotEnv() {
         # use $UID directly itself since it is a shell variable and not an env variable, so
         # we have to set it explicitly here.
         echo "HOST_UID=$(id -u)"
-        # Your local home directory for composer and npm caching
-        echo "HOST_HOME=${HOME}"
         # Your local user
         echo "CORE_ROOT=${CORE_ROOT}"
         echo "HOST_USER=${USER}"
@@ -38,7 +36,6 @@ setUpDockerComposeDotEnv() {
         echo "PHP_VERSION=${PHP_VERSION}"
         echo "CHUNKS=${CHUNKS}"
         echo "THISCHUNK=${THISCHUNK}"
-        echo "PASSWD_PATH=${PASSWD_PATH}"
     } > .env
 }
 
@@ -309,7 +306,6 @@ MYSQL_VERSION="5.5"
 POSTGRES_VERSION="10"
 CHUNKS=0
 THISCHUNK=0
-PASSWD_PATH=/etc/passwd
 
 # Option parsing
 # Reset in case getopts has been used previously in the shell
@@ -409,20 +405,6 @@ fi
 # Move "7.2" to "php72", the latter is the docker container name
 DOCKER_PHP_IMAGE=$(echo "php${PHP_VERSION}" | sed -e 's/\.//')
 
-# Some scripts rely on a proper /etc/passwd that includes the user that runs the
-# containers, for instance to determine users $HOME. yarn v1 is espcecially picky
-# here since it fails if it can't write a .yarnrc file to users home ...
-# MacOS in it's endless wisdom however decided that /etc/passwd is a stupid thing
-# and does not write an entry for the standard user in it. In turn, stuff like yarn fails.
-# As a solution, we detect if the user executing the script is within /etc/passwd
-# and volume mount that file within containers. If not, we create a fake passwd file
-# and mount that one.
-[ -z "${USER}" ] && USER=$(id -u -n)
-if [ "$(grep -c "^${USER}:" /etc/passwd)" -ne 1 ]; then
-    echo "${USER}:x:$(id -u "$USER"):$(id -g "$USER"):$(id -gn "$USER"):${HOME}:/bin/bash" > macos_passwd
-    PASSWD_PATH="./macos_passwd"
-fi
-
 # Set $1 to first mass argument, this is the optional test file or test directory to execute
 shift $((OPTIND - 1))
 TEST_FILE=${1}