Created
July 31, 2024 06:27
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heredoc in dockerfile snippets
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| FROM debian | |
| RUN <<EOT bash | |
| set -eux | |
| to_install=( | |
| vim | |
| ) | |
| apt-get update | |
| failing_command # set -e exit with non-zero status | |
| apt-get install -y "\${to_install[@]}" | |
| EOT | |
| # execute list shell | |
| RUN <<EOF | |
| apt-get update | |
| apt-get upgrade -y | |
| apt-get install -y ... | |
| EOF | |
| # run python | |
| RUN <<EOF | |
| #!/usr/bin/env python3 | |
| with open("/hello", "w") as f: | |
| print("Hello", file=f) | |
| print("World", file=f) | |
| EOF | |
| # create index.html | |
| COPY <<EOF /usr/share/nginx/html/index.html | |
| <html>hello, index</html> | |
| EOF | |
| # create /etc/mysql/my.cnf | |
| RUN <<-EOF > /etc/mysql/my.cnf | |
| [mysqld] | |
| user=root | |
| datadir=/app/mysql | |
| port=3306 | |
| log-bin=/app/mysql/mysql-bin | |
| EOF |
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