akinmetin edited a comment on issue #1672:
URL:
https://github.com/apache/incubator-pagespeed-ngx/issues/1672#issuecomment-636387228
> Seem that you don´t have some dep installed. Have you installed the
libpng-dev package?
Yes, I use it when building PageSpeed and PSOL
This is for Nginx built just above the failed line:
```
RUN apk add --no-cache \
apr-dev \
apr-util-dev \
build-base \
ca-certificates \
gd-dev \
geoip-dev \
git \
gnupg \
icu-dev \
libjpeg-turbo-dev \
libpng-dev \
libxslt-dev \
linux-headers \
libressl-dev \
pcre-dev \
tar \
zlib-dev \
;
```
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