I've getting started with Docker, using the LAMP repo from GitHub as my starting point. I need to add the libxslt lib. I've tried adding this to my Dockerfile:
RUN apt-get install libxslt-dev
RUN docker-php-ext-enable libxslt-dev
But keep getting error: E: Unable to locate package libxslt-dev
I've tried to search for the lib from the Docker container's command line apt-cache search libxslt but get no results.
Can anybody point me in the right direction to get this lib installed?
Thanks
Followed answer below (@vpalmerini) updating Dockerfile:
RUN apt update && apt-get install -y libxslt-dev
RUN docker-php-ext-enable libxslt-dev
Which I thought was working:
Step 9/13 : RUN apt update && apt-get install -y libxslt-dev
[...]
The following additional packages will be installed:
libxslt1.1
The following NEW packages will be installed:
libxslt1-dev libxslt1.1
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 756 kB of archives.
After this operation, 3001 kB of additional disk space will be used.
Get:1 http://deb.debian.org/debian buster/main amd64 libxslt1.1 amd64 1.1.32-2.2~deb10u1 [237 kB]
Get:2 http://deb.debian.org/debian buster/main amd64 libxslt1-dev amd64 1.1.32-2.2~deb10u1 [519 kB]
Fetched 756 kB in 0s (4903 kB/s)
Selecting previously unselected package libxslt1.1:amd64.
(Reading database ... 21271 files and directories currently installed.)
Preparing to unpack .../libxslt1.1_1.1.32-2.2~deb10u1_amd64.deb ...
Unpacking libxslt1.1:amd64 (1.1.32-2.2~deb10u1) ...
Selecting previously unselected package libxslt1-dev:amd64.
Preparing to unpack .../libxslt1-dev_1.1.32-2.2~deb10u1_amd64.deb ...
Unpacking libxslt1-dev:amd64 (1.1.32-2.2~deb10u1) ...
Setting up libxslt1.1:amd64 (1.1.32-2.2~deb10u1) ...
Setting up libxslt1-dev:amd64 (1.1.32-2.2~deb10u1) ...
Processing triggers for libc-bin (2.28-10) ...
Removing intermediate container b62504aca3f9
---> b62b7af34467
Step 10/13 : RUN docker-php-ext-enable libxslt-dev
---> Running in 181191c74fe5
error: 'libxslt-dev' does not exist
Also tried changing RUN command to match package found: libxslt1-dev
RUN docker-php-ext-enable libxslt1-dev
Still unable to enable libxslt
Further info, output from:
dpkg --get-selections
includes:
libxml2-dev:amd64 install
libxrender-dev:amd64 install
libxrender1:amd64 install
libxslt1-dev:amd64 install
libxslt1.1:amd64 install
libxt-dev:amd64 install
But running RUN docker-php-ext-enable libxslt1-dev still gives
error: 'libxslt1-dev' does not exist
You are confusing the php extension called xsl with the system development package for libxslt (present on your base image Debian Linux distribution with the specific name libxslt1-dev) which is required to install that php extension.
Here is a basic Dockerfile to achieve your requirement. Note that, as a good practice, I made the install in a single run instruction with some extra cleanup at the end.
The apt-get remove line is optional but will reduce the layer size a bit more. Installing libxslt1-dev and all its dependencies (icu-devtools, libicu-dev, libicu63, libxml2, libxml2-dev, libxslt1.1) is mandatory for installing the extension. But once it is done, the dev packages can be removed.
FROM php:7.4.2-apache-buster
RUN apt-get update && \
apt-get install -y libxslt1-dev && \
docker-php-ext-install xsl && \
apt-get remove -y libxslt1-dev icu-devtools libicu-dev libxml2-dev && \
rm -rf /var/lib/apt/lists/*