Use bash as the default shell in `test-push`

.github/workflows/test-push.yml

@@ -4,6 +4,9 @@ on: [push]
 env:
   IS_ACTIONS_DOC: "false"
   IS_MD_FILE: "false"
+defaults:
+  run:
+    shell: bash
 jobs:
   test:
     name: Test

README.md

@@ -31,7 +31,7 @@ TerrabaseDB (or TDB for short) is an effort to provide the best of key/value sto
 - **Resource friendly**: The database server doesn't need more than 1MB to run
 - **Convenient**: Without the setup hassle and system-specific dependencies
 
-(... and more on the way)
+(... [and more on the way](https://github.com/terrabasedb/terrabasedb/labels/roadmap))
 
 ## Clients 🔌
 

ci/dockervars.sh

@@ -4,7 +4,7 @@
 set -euo pipefail
 SRC_CHANGED_COUNT=$(git diff --numstat HEAD^..HEAD -- '*.rs' '*.yml' '*.toml' 'Dockerfile' | wc -l)
 
-if [ '$SRC_CHANGED_COUNT' != "0" ]; then
+if [ $SRC_CHANGED_COUNT != "0" ]; then
     echo "The docker image has to be built"
     echo "BUILD=true" >>$GITHUB_ENV
 fi