adding seqtk version 1.4

[erinyoung]

There's a new version of seqtk!

From the release notes:

Notable changes:

Improvement: faster FASTX parsing (lh3/seqtk#123)

New feature: added the telo command to output telomere regions.

New feature: added the size command to count the number of sequences and
the number of bases. Lighter and thus faster than comp.

New feature: added the hpc command to compress homopolymers in input
sequences.

New feature: added the split command to split a large input file into
multiple smaller files.

New feature: added the gap command to output non-ACGT regions in the input
file.

New feature: added option -s to command subseq to support the strand
field in BED. For the moment, this option does not work with other subseq
options.

The version 1.3 Dockerfile was very old, so I used the Dockerfile_builder template instead. I added on a test stage and created a README.md for the tool as well.

seqtk does have an issue where there is no built in help option. The best I came up with is just to call the executable - which writes to stderr and Docker sees this as an error. I'm open to other workarounds, though.

Pull Request (PR) checklist:

• Include a description of what is in this pull request in this message.
• The dockerfile successfully builds to a test target for the user creating the PR. (i.e. docker build --tag samtools:1.15test --target test docker-builds/samtools/1.15 )
• Directory structure as name of the tool in lower case with special characters removed with a subdirectory of the version number (i.e. spades/3.12.0/Dockerfile)
  • (optional) All test files are located in same directory as the Dockerfile (i.e. shigatyper/2.0.1/test.sh)
• Create a simple container-specific README.md in the same directory as the Dockerfile (i.e. spades/3.12.0/README.md)
  • If this README is longer than 30 lines, there is an explanation as to why more detail was needed
• Dockerfile includes the recommended LABELS
• Main README.md has been updated to include the tool and/or version of the dockerfile(s) in this PR
• Program_Licenses.md contains the tool(s) used in this PR and has been updated for any missing

[erinyoung]

Closes #673

[Kincekara]

Looks great!

[Kincekara]

Thank you for your PR!
You can follow the deploy progress here: https://github.com/StaPH-B/docker-builds/actions/runs/7330098990