Add supported_platforms to bash descriptor

Relates to #1553

Author: echoix

megalinter/descriptors/bash.megalinter-descriptor.yml

@@ -33,6 +33,13 @@ linters:
     cli_help_arg_name: "--help"
     examples:
       - "bash-exec myfile.sh"
+    supported_platforms:
+      platform:
+        - linux/amd64
+        - linux/arm64
+        - linux/arm/v7
+        - linux/386
+        - linux/ppc64le
     install:
       dockerfile:
         - |
@@ -69,6 +76,21 @@ linters:
     cli_lint_errors_regex: "In .* line .*:.*\\n"
     examples:
       - "shellcheck --color=auto --external-sources myfile.sh"
+    supported_platforms:
+      platform:
+        - linux/amd64
+        - linux/arm64
+      install_override:
+        - platform: linux/arm64
+          install:
+            dockerfile:
+              - |
+                RUN ML_THIRD_PARTY_DIR="/third-party/shellcheck" \
+                    && mkdir -p ${ML_THIRD_PARTY_DIR} \
+                    && wget -qO- "https://github.com/koalaman/shellcheck/releases/download/stable/shellcheck-stable.linux.aarch64.tar.xz" | tar -xJv --directory ${ML_THIRD_PARTY_DIR} \
+                    && mv "${ML_THIRD_PARTY_DIR}/shellcheck-stable/shellcheck" /usr/bin/ \
+                    && find ${ML_THIRD_PARTY_DIR} -type f -not -name 'LICENSE*' -delete -o -type d -empty -delete \
+                    && shellcheck --version
     install:
       cargo:
         - shellcheck-sarif
@@ -122,6 +144,13 @@ linters:
     examples:
       - "shfmt -d myfile.sh"
       - "shfmt -w myfile.sh" # Fix
+    supported_platforms:
+      platform:
+        - linux/amd64
+        - linux/arm64
+        - linux/arm/v7
+        - linux/386
+        - linux/ppc64le
     install:
       dockerfile:
         - FROM mvdan/shfmt:latest-alpine as shfmt