initial draft of helmfile-linter

github/helmfile-linter/Dockerfile

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+FROM alpine:3.10
+
+LABEL maintainer="Cloud Posse <hello@cloudposse.com>"
+
+LABEL "com.github.actions.name"="Helmfile Linter"
+LABEL "com.github.actions.description"="Check All Helmfiles for Errors"
+LABEL "com.github.actions.icon"="activity"
+LABEL "com.github.actions.color"="blue"
+
+RUN	apk add --no-cache \
+	bash \
+	ca-certificates \
+	curl \
+	jq \
+	git
+
+RUN curl -L https://github.com/roboll/helmfile/releases/download/v0.137.0/helmfile_linux_amd64 \
+    --output helmfile_linux_amd64 && \
+    chmod 764 helmfile_linux_amd64
+
+COPY entrypoint.sh /
+
+RUN chmod 755 /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

github/helmfile-linter/action.yml

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+name: 'Helmfile Linter'
+description: 'Check All Helmfiles for Errors'
+author: 'Cloud Posse <hello@cloudposse.com>'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+branding:
+  icon: 'activity'
+  color: 'blue'

github/helmfile-linter/entrypoint.sh

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+#!/bin/bash
+
+# set -x
+
+# Gather list of helmfiles in current project according to the error text of `helmfile lint`:
+#   "It must be named helmfile.d/*.{yaml,yml}, helmfile.yaml, or charts.yaml, or otherwise
+#   specified with the --file flag"
+# However, we won't find the helmfiles with custom names (specified using the --file flag in the
+# helmfile command).
+helmfiles=( $(find . -type f -name "helmfile.yaml" \
+                     -a -not -path "*helmfile.d/*" \
+                     -a -not -path "*.github/*") )
+for new_helmfile in $(find . -type f -name "charts.yaml" \
+                             -a -not -path "*helmfile.d/*" \
+                             -a -not -path "*.github/*"); do
+    helmfiles+=("$new_helmfile")
+done
+for new_helmfile in $(find . -type f -path '*helmfile.d/*' \
+                             -a \( -name '*.yaml' -o -name '*.yml' \) ); do
+    helmfiles+=("$new_helmfile")
+done
+
+# lint each helmfile
+echo ""
+echo "Linting helmfiles."
+for unlinted_helmfile in "${helmfiles[@]}"; do
+    # Split up helmfile path in order to move to the containing directory
+    helmfile_dir=`dirname "$unlinted_helmfile"`
+
+    # save current directory
+    original_dir=$(pwd)
+
+    # move to new directory
+    cd $helmfile_dir
+    echo "Linting ${unlinted_helmfile}:"
+    /helmfile_linux_amd64 lint
+    echo ""
+
+    # move back to original directory
+    cd $original_dir
+done
+echo "Done linting helmfiles."
+echo ""

github/mega-linter/.automation/README.md

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+# .automation
+
+This folder holds automation scripts to help `deploy` and `cleanup` **DockerHub** images of the **Mega-Linter**
+
+## cleanup-docker.sh
+
+This script uses **GitHub Actions** so that when a PR is merged and closed, the **GitHub Action** is triggered.
+It will then search **DockerHub** for the image that was deployed during the development, and remove it.
+
+## upload-docker.sh
+
+This script uses **GitHub Actions** so that when a push to the repository is committed, it will complete the following:
+
+- Checkout the source code
+- Build the **Docker** container for **Mega-Linter** using that source code
+- Upload the container to **DockerHub**
+
+When the script is triggered on master, it will push with the tag:**latest** which is used by all scripting for general availability.
+When the script is triggered in a branch, it will push with the tag:**NameOfBranch** which can be used for:
+
+- _testing_
+- _troubleshooting_
+- _debugging_
+- **Note:** The branch name will be reduced to alphanumeric for consistency and uploading
+
+## test
+
+This folder holds all **Test Cases** to help run the _CI/CT/CD_ process for the **Mega-Linter**.