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I recently noticed that my og images were missing emoji. They were taken using headless chrome in a container. I fixed it by adding an emoji font in the containerfile / dockerfile.
RUN apt-get update && apt-get install -y \ # Add fonts with emoji support fonts-noto-color-emoji \ && rm -rf /var/lib/apt/lists/*
Before
Here's what they were looking like with broken emoji fonts.
After
And now with the fixed emoji font.
I put thought bubbles on my thoughts posts and stars on my github stars posts