Fix size check and make script shell consistent

scripts/binary_size_check.sh

-#!/bin/sh
+#!/bin/bash
 
 set -e
 
@@ -7,10 +7,18 @@ if [ "${DEBUG}" = 1 ]; then
 fi
 
 MAX_BINARY_SIZE=61000000
-SIZE=$(ls -l dist/artifacts/k3s | awk -F ' ' '{print $5}')
+BIN_SUFFIX="-${ARCH}"
+if [ ${ARCH} = amd64 ]; then
+    BIN_SUFFIX=""
+elif [ ${ARCH} = arm ]; then
+    BIN_SUFFIX="-armhf"
+fi
+
+CMD_NAME="dist/artifacts/k3s${BIN_SUFFIX}"
+SIZE=$(stat -c '%s' ${CMD_NAME})
 
 if [ ${SIZE} -gt ${MAX_BINARY_SIZE} ]; then
-    echo "k3s binary exceeds acceptable size of "${MAX_BINARY_SIZE}
+    echo "k3s binary ${CMD_NAME} size ${SIZE} exceeds acceptable size of ${MAX_BINARY_SIZE}"
     exit 1
 fi
 

scripts/ci

 #!/bin/bash
 set -e
 
-cd $(dirname $0)
+SCRIPT_DIR=$(dirname $0)
+pushd $SCRIPT_DIR
 
 ./download
 if [ -z "$SKIP_VALIDATE" ]; then
@@ -10,4 +11,7 @@ fi
 
 ./build
 ./package
-./binary_size_check.sh
+
+popd
+
+$SCRIPT_DIR/binary_size_check.sh

scripts/dispatch

-#!/bin/sh
+#!/bin/bash
 set -e
 set -x
 
@@ -8,4 +8,4 @@ REPO="https://api.github.com/repos/rancher/k3s-upgrade/dispatches"
 curl -XPOST -u "${PAT_USERNAME}:${PAT_TOKEN}" \
         -H "Accept: application/vnd.github.everest-preview+json"  \
         -H "Content-Type: application/json" $REPO \
-        --data '{"event_type": "create_tag", "client_payload": {"tag":"'"$DRONE_TAG"'"}}'
\ No newline at end of file
+        --data '{"event_type": "create_tag", "client_payload": {"tag":"'"$DRONE_TAG"'"}}'

scripts/manifest

-#!/bin/sh
+#!/bin/bash
 
 if [ -z "${DRONE_TAG}" ]; then
   echo "DRONE_TAG not defined" >&2