Add Trivy template for Markdown

Dockerfile

@@ -6,4 +6,4 @@ COPY    ./install_tools.sh /usr/local/bin/install_tools.sh
 
 RUN     /usr/local/bin/install_tools.sh
 
-COPY    ./trivy-markdown.tpl /usr/local/share/trivy/templates/trivy-markdown.tpl
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+COPY    ./trivy-markdown*.tpl /usr/local/share/trivy/templates/
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trivy-markdown-json.tpl

+{ "body": "{{- if . }}{{- range . }}## Target `{{ escapeXML .Target }}`\n{{- if (eq (len .Vulnerabilities) 0) }}\n### No Vulnerabilities found\n{{- else }}\n### Vulnerabilities ({{ len .Vulnerabilities }})\n| Package | ID | Severity | Installed Version | Fixed Version | Title |\n| -------- | ---- | -------- | ---------------- | ------------ | ---- |{{- range .Vulnerabilities }}\n| `{{ escapeXML .PkgName }}` | [{{ escapeXML .VulnerabilityID }}]({{ escapeXML .PrimaryURL }}) | {{ escapeXML .Severity }} {{- if eq .Severity "HIGH" }}⚠{{- end }}{{- if eq .Severity "CRITICAL" }}🚫{{- end }} | {{ escapeXML .InstalledVersion }} | {{ escapeXML .FixedVersion }} | {{ escapeXML .Title }} |\n{{- end }}{{- end }}{{- end }}{{- else }}\n## Trivy Returned Empty Report\n{{- end }}" }
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