chg: dev: avoid ``exit`` in favor of ``return``

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

bin/compose

@@ -385,14 +385,14 @@ get_compose_file_opt() {
     if [ -n "$override" ]; then
         if ! [ -f "$override" ]; then
             err "Invalid override of 'compose-core' detected. File '$override' does not exist on host."
-            exit 1
+            return 1
         fi
         hash=$( { p0 "$image_id"; cat "$override"; } | md5_compat)
     else
         hash=$(p0 "$image_id" | md5_compat)
     fi
 
-    _get_compose_file_opt "$hash" "$override" "$@" || exit 1
+    _get_compose_file_opt "$hash" "$override" "$@" || return 1
 }
 
 
@@ -443,13 +443,13 @@ replace_compose_file_opt() {
     if [ -n "$override" ]; then
         if ! [ -f "$override" ]; then
             err "Invalid override of 'compose-core' detected. File '$override' does not exist on host."
-            exit 1
+            return 1
         fi
         hash=$( { p0 "$image_id"; cat "$override"; } | md5_compat)
     else
         hash=$(p0 "$image_id" | md5_compat)
     fi
-    _replace_compose_file_opt "$hash" "$override" "$@" || exit 1
+    _replace_compose_file_opt "$hash" "$override" "$@" || return 1
 }
 
 
@@ -682,7 +682,7 @@ set_os() {
             ;;
         *)
             echo "System '$os' not supported yet." >&2
-            exit 1
+            return 1
             ;;
     esac
 }
@@ -727,13 +727,12 @@ mk_docker_run_options() {
         docker_run_opts+=("-e" "DISABLE_SYSTEM_CONFIG_FILE=$DISABLE_SYSTEM_CONFIG_FILE")
     fi
 
-
-    mkdir -p "$COMPOSE_LAUNCHER_CACHE"
+    mkdir -p "$COMPOSE_LAUNCHER_CACHE" || return 1
 
     ## get TZ value and prepare TZ_PATH
-    TZ=$(get_tz) || exit 1
+    TZ=$(get_tz) || return 1
     mkdir -p "${TZ_PATH}"
-    TZ_PATH="${TZ_PATH}/$(e "$TZ" | sha256sum | cut -c 1-8)" || exit 1
+    TZ_PATH="${TZ_PATH}/$(e "$TZ" | sha256sum | cut -c 1-8)" || return 1
     [ -e "$TZ_PATH" ] || e "$TZ" > "$TZ_PATH"
 
     ## CACHE/DATA DIRS
@@ -747,9 +746,9 @@ mk_docker_run_options() {
     ##
 
     ## CHARM_STORE
-    [ -e "$CHARM_STORE" ] || mkdir -p "$CHARM_STORE" || exit 1
+    [ -e "$CHARM_STORE" ] || mkdir -p "$CHARM_STORE" || return 1
     [ -L "$CHARM_STORE" ] && {
-        CHARM_STORE=$(readlink -f "$CHARM_STORE") || exit 1
+        CHARM_STORE=$(readlink -f "$CHARM_STORE") || return 1
     }
 
     docker_run_opts+=(
@@ -757,7 +756,7 @@ mk_docker_run_options() {
         "-e" "CHARM_STORE=/srv/charm-store"
         "-e" "HOST_CHARM_STORE=$CHARM_STORE"
     )
-    check_no_links_subdirs "$CHARM_STORE"/* || exit 1
+    check_no_links_subdirs "$CHARM_STORE"/* || return 1
 
     ## DEFAULT_COMPOSE_FILE
     if [ "${DEFAULT_COMPOSE_FILE+x}" ]; then
@@ -797,7 +796,7 @@ mk_docker_run_options() {
     docker_run_opts+=("-e" "COMPOSE_DOCKER_IMAGE=$COMPOSE_DOCKER_IMAGE")
 
     if ! docker_has_image "$COMPOSE_DOCKER_IMAGE"; then
-        docker pull "$COMPOSE_DOCKER_IMAGE" || exit 1
+        docker pull "$COMPOSE_DOCKER_IMAGE" || return 1
     fi
 
 
@@ -822,7 +821,7 @@ mk_docker_run_options() {
         esac
     done < <(list_compose_vars)
 
-    compose_file=$(get_compose_file_opt "$COMPOSE_DOCKER_IMAGE" "$@") || exit 1
+    compose_file=$(get_compose_file_opt "$COMPOSE_DOCKER_IMAGE" "$@") || return 1
 
     if [ -z "$compose_file" ]; then
         ## Find a compose.yml in parents
@@ -833,7 +832,7 @@ mk_docker_run_options() {
                             echo "$PWD"
                             exit 0
                         }
-                        [ "$PWD" == "/" ] && exit 1
+                        [ "$PWD" == "/" ] && return 1
                         cd ..
                     done
                  ); then