title: How to install SSHFS inside Alpine container?
body: <p>I use <code>php:7.3.2-cli-alpine3.9</code> as my base image. I also need SSHFS installed inside container since PHP library I use relies on it. I know there are many answers with "if you install SSHFS inside container you are doing it wrong" but in my case I need this software installed inside container not on host.</p>
  
  <p>In my Dockerfile I have</p>
  
  <p><code>RUN apk update &amp;&amp; apk add sshfs;</code></p>
  
  <p>This command is executed without errors:</p>
  
  <pre><code>fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/x86_64/APKINDEX.tar.gz
  fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/x86_64/APKINDEX.tar.gz
  v3.9.3-21-g265a28802e [http://dl-cdn.alpinelinux.org/alpine/v3.9/main]
  v3.9.3-15-g583c0d55e9 [http://dl-cdn.alpinelinux.org/alpine/v3.9/community]
  OK: 9764 distinct packages available
  (1/12) Installing openssh-keygen (7.9_p1-r4)
  (2/12) Installing openssh-client (7.9_p1-r4)
  (3/12) Installing fuse-common (3.2.6-r1)
  (4/12) Installing fuse3 (3.2.6-r1)
  (5/12) Installing libffi (3.2.1-r6)
  (6/12) Installing libintl (0.19.8.1-r4)
  (7/12) Installing libuuid (2.33-r0)
  (8/12) Installing libblkid (2.33-r0)
  (9/12) Installing libmount (2.33-r0)
  (10/12) Installing pcre (8.42-r1)
  (11/12) Installing glib (2.58.1-r2)
  (12/12) Installing sshfs (3.5.1-r0)
  Executing busybox-1.29.3-r10.trigger
  Executing glib-2.58.1-r2.trigger
  OK: 25 MiB in 44 packages
  </code></pre>
  
  <p>But when I am trying to mount remote host</p>
  
  <p><code>'/usr/bin/sshfs' -C -o reconnect -o 'Port=22' -o 'UserKnownHostsFile=/ssh/known_hosts' -o StrictHostKeyChecking=yes -o 'IdentityFile=/ssh/&lt;FILE&gt;' -o PasswordAuthentication=no '&lt;USER&gt;@&lt;HOST&gt;:/' '/fuse/'</code></p>
  
  <p>I am getting:</p>
  
  <p><code>fuse: device not found, try 'modprobe fuse' first</code></p>
  
  <p>When I am running it I am getting:</p>
  
  <p><code>modprobe: can't change directory to '/lib/modules': No such file or directory</code></p>
  
  <p>Am I missing any packages? What else needs to be installed?</p>
  
  <p>Thanks.</p>