1singularity(1) singularity(1)
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6 singularity-build - Build a Singularity image
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11 singularity build [local options...] <IMAGE PATH> <BUILD SPEC>
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16 IMAGE PATH:
17 When Singularity builds the container, output can be one of a few
20 formats:
21 default: The compressed Singularity read only image format (default)
24 sandbox: This is a read-write container within a directory structure
25 note: It is a common workflow to use the "sandbox" mode for development
29 of the
30 container, and then build it as a default Singularity image for
31 production
32 use. The default format is immutable.
33 BUILD SPEC:
36 The build spec target is a definition (def) file, local image, or URI
39 that can
40 be used to create a Singularity container. Several different local
41 target
42 formats exist:
43 def file : This is a recipe for building a container (examples below)
46 directory: A directory structure containing a (ch)root file system
47 image: A local image on your machine (will convert to sif if
48 it is legacy format)
49 Targets can also be remote and defined by a URI of the following
53 formats:
54 library:// an image library (default https://cloud.sylabs.io/library)
57 docker:// a Docker registry (default Docker Hub)
58 shub:// a Singularity registry (default Singularity Hub)
59 oras:// a supporting OCI registry
60
65 --arch="amd64"
66 Architecture for remote build
67 --builder=" ⟨https://build.sylabs.io"⟩
70 remote Build Service URL, setting this implies --remote
71 -d, --detached[=false]
74 submit build job and print build ID (no real-time logs and requires
75 --remote)
76 --disable-cache[=false]
79 do not use cache or create cache
80 --docker-login[=false]
83 login to a Docker Repository interactively
84 -e, --encrypt[=false]
87 build an image with an encrypted file system
88 -f, --fakeroot[=false]
91 build using user namespace to fake root user (requires a privileged
92 installation)
93 -F, --force[=false]
96 delete and overwrite an image if it currently exists
97 -h, --help[=false]
100 help for build
101 --json[=false]
104 interpret build definition as JSON
105 --library=" ⟨https://library.sylabs.io"⟩
108 container Library URL
109 --no-cleanup[=false]
112 do NOT clean up bundle after failed build, can be helpul for
113 debugging
114 --nohttps[=false]
117 do NOT use HTTPS, for communicating with local docker registry
118 -T, --notest[=false]
121 build without running tests in %test section
122 --passphrase[=false]
125 Enter a passphrase for an encrypted contaner
126 --pem-path=""
129 Enter an path to a PEM formated RSA key for an encrypted container
130 -r, --remote[=false]
133 build image remotely (does not require root)
134 -s, --sandbox[=false]
137 build image as sandbox format (chroot directory structure)
138 --section=[all]
141 only run specific section(s) of deffile (setup, post, files,
142 environment, test, labels, none)
143 --tmpdir=""
146 specify a temporary directory to use for build
147 -u, --update[=false]
150 run definition over existing container (skips header)
151
155 DEF FILE BASE OS:
156 Library:
158 Bootstrap: library
159 From: debian:9
160 Docker:
162 Bootstrap: docker
163 From: tensorflow/tensorflow:latest
164 IncludeCmd: yes # Use the CMD as runscript instead of ENTRYPOINT
165 Singularity Hub:
167 Bootstrap: shub
168 From: singularityhub/centos
169 YUM/RHEL:
171 Bootstrap: yum
172 OSVersion: 7
173 MirrorURL: http://mirror.centos.org/centos-%{OSVERSION}/%{OSVERSION}/os/x86_64/
174 Include: yum
175 Debian/Ubuntu:
177 Bootstrap: debootstrap
178 OSVersion: trusty
179 MirrorURL: http://us.archive.ubuntu.com/ubuntu/
180 Local Image:
182 Bootstrap: localimage
183 From: /home/dave/starter.img
184 Scratch:
186 Bootstrap: scratch # Populate the container with a minimal rootfs in %setup
187 DEFFILE SECTIONS:
189 %pre
191 echo "This is a scriptlet that will be executed on the host, as root before"
192 echo "the container has been bootstrapped. This section is not commonly used."
193 %setup
195 echo "This is a scriptlet that will be executed on the host, as root, after"
196 echo "the container has been bootstrapped. To install things into the container"
197 echo "reference the file system location with $SINGULARITY_ROOTFS."
198 %post
200 echo "This scriptlet section will be executed from within the container after"
201 echo "the bootstrap/base has been created and setup."
202 %test
204 echo "Define any test commands that should be executed after container has been"
205 echo "built. This scriptlet will be executed from within the running container"
206 echo "as the root user. Pay attention to the exit/return value of this scriptlet"
207 echo "as any non-zero exit code will be assumed as failure."
208 exit 0
209 %runscript
211 echo "Define actions for the container to be executed with the run command or"
212 echo "when container is executed."
213 %startscript
215 echo "Define actions for container to perform when started as an instance."
216 %labels
218 HELLO MOTO
219 KEY VALUE
220 %files
222 /path/on/host/file.txt /path/on/container/file.txt
223 relative_file.txt /path/on/container/relative_file.txt
224 %environment
226 LUKE=goodguy
227 VADER=badguy
228 HAN=someguy
229 export HAN VADER LUKE
230 %help
232 This is a text file to be displayed with the run-help command.
233 COMMANDS:
235 Build a sif file from a Singularity recipe file:
237 $ singularity build /tmp/debian0.sif /path/to/debian.def
238 Build a sif image from the Library:
240 $ singularity build /tmp/debian1.sif library://debian:latest
241 Build a base sandbox from DockerHub, make changes to it, then build sif
243 $ singularity build --sandbox /tmp/debian docker://debian:latest
244 $ singularity exec --writable /tmp/debian apt-get install python
245 $ singularity build /tmp/debian2.sif /tmp/debian
246
251 singularity(1)
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256 21-Oct-2019 Auto generated by spf13/cobra
257Auto generated by spf13/cobra Oct 2019 singularity(1)