feat: set up Github Action (container action)

Dockerfile

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+FROM node:12
+
+# do not require puppeteer download of Chronium;
+# resume-cli uses puppeteer for PDF export, which we do not use.
+ENV PUPPETEER_SKIP_DOWNLOAD=1
+
+LABEL repository="https://github.com/kelvintaywl/jsonresume-github-page"
+LABEL homepage="https://github.com/kelvintaywl/jsonresume-github-page"
+LABEL maintainer="Kelvin Tay <[email protected]>"
+
+RUN npm install -g [email protected]
+COPY entrypoint.sh /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

action.yml

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+# action.yml
+name: 'JSONResume Export'
+description: 'Simple GitHub Action to export your JSONResume'
+branding:
+  icon: 'printer'
+  color: 'yellow'
+inputs:
+  theme:
+    description: |
+      JSONResume theme name.
+      Assumes the theme package would be found 
+      as `jsonresume-theme-{theme}` in NPM.
+      You can search for themes at https://npmsearch.com/?q=jsonresume-theme
+    required: true
+    default: 'flat'
+  resume_filepath:
+    description: |
+      File path of the resume in JSONResume format
+    required: false
+    default: 'resume.json'
+  output_filepath:
+    description: |
+      Output file path for exported HTML file.
+    required: false
+    default: 'index.html'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.theme }}
+    - ${{ inputs.resume_filepath }}
+    - ${{ inputs.output_filepath }}

entrypoint.sh

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+#!/bin/sh -l
+
+THEME=${1}
+RESUME=${2}
+OUTPUT=${3}
+
+THEME_PACKAGE=jsonresume-theme-${THEME}
+echo "Installing theme: ${THEME}"
+
+# NOTE: this needs to be installed locally, not globally
+npm install ${THEME_PACKAGE}
+
+resume export --resume ${RESUME} --theme ${THEME} --format html ${OUTPUT}