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Small, practical examples. Search by task or narrow things down below.

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Docker / ComposeCompose service options

Override the image entrypoint in Compose

Docker / Compose: entrypoint and command combine as executable and arguments.

Docker / Compose✓ Tested
Docker / ComposeExecution & file transfer

Override the process working directory

Docker / Compose: The workdir option sets the directory for the container command.

Docker / Compose✓ Tested
C++Numeric parsing & calculations

Parse a hexadecimal integer with from_chars

C++: An explicit radix controls digit interpretation without a locale dependency.

C++✓ Tested
Docker / ComposeGetting Started

Pass a named configuration value

Docker / Compose: Pass a named configuration value using a locally available Ubuntu image.

Docker / Compose✓ Tested
Docker / ComposeContainer commands

Pass an environment variable

Supply configuration without changing an image.

environment✓ Tested
Docker / ComposeCompose service options

Pass dollar expressions through Compose

Docker / Compose: Double dollar signs defer expansion to the container shell.

Docker / Compose✓ Tested
jQueryEvent control

Pass values through a custom event

jQuery: trigger passes its extra argument array after the event object.

jQuery✓ Tested
Docker / ComposeExecution & file transfer

Pipe input into a container process

Docker / Compose: The interactive flag keeps standard input open without allocating a terminal.

Docker / Compose✓ Tested
jQueryHTTP requests

Post a JSON request body

jQuery: JSON.stringify and application/json send a JSON document.

jQuery✓ Tested
jQueryHTTP requests

Post URL-encoded form data

jQuery: post sends a data object as form-encoded fields by default.

jQuery✓ Tested
Docker / ComposeDockerfile patterns

Prepare an owned directory before dropping root

Docker / Compose: Create and chown the writable application path before USER.

Docker / Compose✓ Tested
GitMerging & replaying changes

Preserve a feature branch boundary with a merge commit

Git: No-ff records a merge commit even when a fast-forward would be possible.

Git✓ Tested