The vips text action is missing

[Nakilon]

$ vips -v && vips text | head -3
vips-8.9.1-Tue Jan 28 13:05:46 UTC 2020
make a text image
usage:
   text out text [--option-name option-value ...]
$ vips -l | grep Create -A 5
    VipsCreate (create), create operations
      VipsBlack (black), make a black image
      VipsGaussnoise (gaussnoise), make a gaussnoise image
      VipsText (text), make a text image
      VipsXyz (xyz), make an image where pixel values are coordinates
      VipsGaussmat (gaussmat), make a gaussian image

$ docker run -it --rm vips-alpine sh -c "vips -v && vips text"
vips-8.9.1-Tue Jan 28 13:05:46 UTC 2020
vips: unknown action "text"
$ docker run -it --rm vips-alpine vips -l | grep Create -A 5
    VipsCreate (create), create operations
      VipsBlack (black), make a black image
      VipsGaussnoise (gaussnoise), make a gaussnoise image
      VipsXyz (xyz), make an image where pixel values are coordinates
      VipsGaussmat (gaussmat), make a gaussian image
      VipsLogmat (logmat), make a laplacian of gaussian image

[Nakilon]

https://github.com/jcupitt/docker-builds/blob/a440d14220eb7457217de752731b437e6a3caa58/ruby-vips-alpine/Dockerfile#L39 says I need gdk-pixbuf-dev but that does not seem to help.

In configure there is the line

text rendering with pangoft2:     no

maybe it is the library that is needed?

[Nakilon]

Seems like text rendering needs all of this: expat pango expat-dev pango-dev gdk-pixbuf-dev.

[Nakilon]

Oh...

Adding such thing as apk add terminus-font and providing --font Terminus does not fix it. And it does not appear in pango-list even after fc-cache -fv.

UPD: forget about squares -- I'll create an Issue about it in another place.

[Nakilon]

So looks like it needs only pango, pango-dev and msttcorefonts-installer and probably it can be done after a build. You may close this ticket whether you want or not to add it to your Dockerfile. In my case I will use a "minified, single-purpose" build for just this command:

RUN set -x -o pipefail \
    && wget -O- https://github.com/libvips/libvips/releases/download/v${VIPS_VERSION}/vips-${VIPS_VERSION}.tar.gz | tar xzC /tmp \
    && apk add glib libpng orc pango \
    && apk add --virtual vips-dependencies \
    build-base libpng-dev orc-dev \
    pango-dev msttcorefonts-installer \
    && cd /tmp/vips-${VIPS_VERSION} \
    && ./configure --prefix=/usr \
                   --disable-static \
                   --disable-debug \
                   --disable-dependency-tracking \
                   --enable-silent-rules \
    && make -s install-strip \
    && update-ms-fonts \
    && cd $OLDPWD \
    && rm -rf /tmp/vips-${VIPS_VERSION} \
    && apk del --purge vips-dependencies \
    && rm -rf /var/cache/apk/*

[felixbuenemann]

Thanks for looking into it.

I'm too busy to update the image right now, but I'll try to look into it the next time I update the image.

[felixbuenemann]

@Nakilon I pushed a new image felixbuenemann/vips-alpine:8.9.2 which has been upgraded to alpine 3.12, vips 8.9.2 and added pango, heif and libimagequant libs.

I didn't add any fonts, so you would have to add a line to install them to your own Dockerfile:

FROM felixbuenemann/vips-alpine:8.9

RUN set -x \
  && apk add --no-cache msttcorefonts-installer \
  && update-ms-fonts \
  && fc-cache -f \
  && apk del --no-cache --purge msttcorefonts-installer

Since the installer and its dependencies are removed, this will only add about 8 MiB to your image.