chore: add superlint fixes

Added fixes for issues pointed out by the 'superlint' workflow

.github/workflows/superlint.yaml

@@ -1,6 +1,6 @@
-name: 'Run Super-Linter'
+name: "Run Super-Linter"
 
-on: ['push', 'pull_request']
+on: ["push", "pull_request"]
 
 permissions: read-all
 
@@ -26,3 +26,4 @@ jobs:
           DEFAULT_BRANCH: main
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           VALIDATE_JSCPD: false
+          BASH_EXEC_IGNORE_LIBRARIES: true

Dockerfile

@@ -18,7 +18,7 @@ ARG PORT=9001
 ARG USER=lhci
 
 # persistent / runtime deps
-# hadolint ignore=DL3008
+# hadolint ignore=DL3018
 RUN apk update && apk add --no-cache --update \
   python3=~3.12 \
   build-base=~0.5 \
@@ -42,6 +42,11 @@ COPY --chmod=755 docker/bin/lhctl /usr/local/bin
 COPY --chmod=755 docker/bin/lhci /usr/local/bin
 COPY --chmod=644 docker/lib/utils.sh /usr/local/lib
 
+# add a healthcheck
+# ref: https://developer.shopware.com/docs/guides/hosting/installation-updates/cluster-setup.html#health-check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=5 \
+  CMD curl --fail "http://localhost:${PORT:-9001}/healthz" || exit 1
+
 # -------------------------------------
 # LHCI Builder Image
 # -------------------------------------