Use libreoffice base image

Author: jmservera

Dockerfile

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+# Container image that runs your code
+FROM lscr.io/linuxserver/libreoffice:latest
+
+RUN apk add --no-cache msttcorefonts-installer fontconfig wget
+RUN update-ms-fonts
+
+RUN mkdir -p "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/segoeui.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/segoeui.ttf"  && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/segoeuib.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/segoeuib.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/segoeuii.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/segoeuii.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/segoeuiz.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/segoeuiz.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/segoeuil.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/segoeuil.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/seguili.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/seguili.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/segoeuisl.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/segoeuisl.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/seguisli.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/seguisli.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/seguisb.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/seguisb.ttf" && \
+    wget -q https://github.com/mrbvrz/segoe-ui/raw/master/font/seguisbi.ttf?raw=true -O "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI/seguisbi.ttf" && \
+    fc-cache -f "/usr/local/share/fonts/Microsoft/TrueType/Segoe UI"
+
+# Copies your code file from your action repository to the filesystem path `/` of the container
+COPY entrypoint.sh /entrypoint.sh
+# Code file to execute when the docker container starts up (`entrypoint.sh`)
+ENTRYPOINT ["/entrypoint.sh"]

action.yml

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+# action.yml
+name: 'Libreoffice Convert'
+description: 'Run libreoffice in headless mode'
+inputs:
+  command:  # id of input
+    description: 'The command to run'
+    required: true
+    default: 'libreoffice --headless --invisible --version'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.command }}

entrypoint.sh

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+#!/bin/sh -l
+
+sh -c "$1"
+time=$(date)
+echo "::set-output name=time::$time"