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Add pre_exec_hooks #66

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Add pre_exec_hooks #66

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10 changes: 10 additions & 0 deletions .docker_scripts/docker_commands.bash
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,16 @@ source $ROOT_DIR/.docker_scripts/file_handling.bash
#storage variable for the return value of the docker exec command
DOCKER_EXEC_RETURN_VALUE=1

run_pre_exec_hooks(){
PRE_EXEC_HOOKS_DIR="$ROOT_DIR/image_setup/02_devel_image/pre_exec_hooks"
if [ -d $PRE_EXEC_HOOKS_DIR ]; then
for script in $(find $PRE_EXEC_HOOKS_DIR -regextype sed -regex "^.*/[0-9]\{2\}[-a-zA-Z0-9._]*.bash$" | sort); do
$PRINT_WARNING "Executing: $(basename $script) in $PRE_EXEC_HOOKS_DIR"
bash $script
done
fi
}

check_run_args_changed(){
CURRENT_RUN_ARGS=$(echo $DOCKER_RUN_ARGS $DOCKER_XSERVER_ARGS | md5sum | cut -b 1-32)
OLD_RUN_ARGS=$(read_value_from_config_file RUN_ARGS_${EXECMODE})
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3 changes: 3 additions & 0 deletions .docker_scripts/exec.bash
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Expand Up @@ -2,6 +2,9 @@

CMD_STRING=""

### RUNNING SCRIPTS LOCATED IN image_setup/02_devel_image/pre_exec_hooks ON HOST
run_pre_exec_hooks

### EVALUATE ARGUMENTS AND SET EXECMODE
EXECMODE=$1
if [[ " ${EXECMODES[*]} " =~ " $EXECMODE " ]]; then
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4 changes: 4 additions & 0 deletions image_setup/02_devel_image/pre_exec_hooks/readme.md
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@@ -0,0 +1,4 @@
### INFO
In order to execute scripts on the host before generating or starting a container, for instance for creating udev rules, you may place bash scripts in this folder
The scripts need a double digit numbered prefix and a .bash file ending (e.g. 01_hello_world.bash)
Scripts will be executed in order!