tesseract.def

Bootstrap: library
From: nitishnarula/secure/ubuntu-focal

%pre
    # this is going to delete your cache to make sure you are getting a minty
    # fresh image from the library
    rm -rf  /root/.singularity/cache/library

%setup
    # insert the fingerprint here
    KEY_FP=53CA588B89E900EC0ED0CF446E20C9F0BAE45D7F
    MESSG="Data integrity verified"
    singularity verify /root/.singularity/cache/library/sha256*/* | \
        grep -q $KEY_FP
    singularity verify /root/.singularity/cache/library/sha256*/* | \
        grep -q "$MESSG"

%runscript
    echo "Singularity container for tesseract-ocr"

%post
    apt-get -y update
    apt-get install -y curl wget nano bzip2 less
    apt-get clean

    apt-get install -y libleptonica-dev tesseract-ocr libtesseract-dev 
    apt-get clean

    mkdir -p /vf /gpfs /spin1 /data /scratch /fdb /lscratch
    for i in $(seq 1 30); do
        ln -s /gpfs/gsfs${i} /gs${i};
    done

%environment
    export LC_ALL=C