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 --fix-perms[=false]
96 ensure owner has rwX permissions on all container content for
97 oci/docker sources
98 -F, --force[=false]
101 overwrite an image file if it exists
102 -h, --help[=false]
105 help for build
106 --json[=false]
109 interpret build definition as JSON
110 --library=" ⟨https://library.sylabs.io"⟩
113 container Library URL
114 --no-cleanup[=false]
117 do NOT clean up bundle after failed build, can be helpul for
118 debugging
119 --nohttps[=false]
122 do NOT use HTTPS with the docker:// transport (useful for local
123 docker registries without a certificate)
124 -T, --notest[=false]
127 build without running tests in %test section
128 --passphrase[=false]
131 prompt for an encryption passphrase
132 --pem-path=""
135 enter an path to a PEM formated RSA key for an encrypted container
136 -r, --remote[=false]
139 build image remotely (does not require root)
140 -s, --sandbox[=false]
143 build image as sandbox format (chroot directory structure)
144 --section=[all]
147 only run specific section(s) of deffile (setup, post, files,
148 environment, test, labels, none)
149 -u, --update[=false]
152 run definition over existing container (skips header)
153
157 DEF FILE BASE OS:
158 Library:
160 Bootstrap: library
161 From: debian:9
162 Docker:
164 Bootstrap: docker
165 From: tensorflow/tensorflow:latest
166 IncludeCmd: yes # Use the CMD as runscript instead of ENTRYPOINT
167 Singularity Hub:
169 Bootstrap: shub
170 From: singularityhub/centos
171 YUM/RHEL:
173 Bootstrap: yum
174 OSVersion: 7
175 MirrorURL: http://mirror.centos.org/centos-%{OSVERSION}/%{OSVERSION}/os/x86_64/
176 Include: yum
177 Debian/Ubuntu:
179 Bootstrap: debootstrap
180 OSVersion: trusty
181 MirrorURL: http://us.archive.ubuntu.com/ubuntu/
182 Local Image:
184 Bootstrap: localimage
185 From: /home/dave/starter.img
186 Scratch:
188 Bootstrap: scratch # Populate the container with a minimal rootfs in %setup
189 DEFFILE SECTIONS:
191 %pre
193 echo "This is a scriptlet that will be executed on the host, as root before"
194 echo "the container has been bootstrapped. This section is not commonly used."
195 %setup
197 echo "This is a scriptlet that will be executed on the host, as root, after"
198 echo "the container has been bootstrapped. To install things into the container"
199 echo "reference the file system location with $SINGULARITY_ROOTFS."
200 %post
202 echo "This scriptlet section will be executed from within the container after"
203 echo "the bootstrap/base has been created and setup."
204 %test
206 echo "Define any test commands that should be executed after container has been"
207 echo "built. This scriptlet will be executed from within the running container"
208 echo "as the root user. Pay attention to the exit/return value of this scriptlet"
209 echo "as any non-zero exit code will be assumed as failure."
210 exit 0
211 %runscript
213 echo "Define actions for the container to be executed with the run command or"
214 echo "when container is executed."
215 %startscript
217 echo "Define actions for container to perform when started as an instance."
218 %labels
220 HELLO MOTO
221 KEY VALUE
222 %files
224 /path/on/host/file.txt /path/on/container/file.txt
225 relative_file.txt /path/on/container/relative_file.txt
226 %environment
228 LUKE=goodguy
229 VADER=badguy
230 HAN=someguy
231 export HAN VADER LUKE
232 %help
234 This is a text file to be displayed with the run-help command.
235 COMMANDS:
237 Build a sif file from a Singularity recipe file:
239 $ singularity build /tmp/debian0.sif /path/to/debian.def
240 Build a sif image from the Library:
242 $ singularity build /tmp/debian1.sif library://debian:latest
243 Build a base sandbox from DockerHub, make changes to it, then build sif
245 $ singularity build --sandbox /tmp/debian docker://debian:latest
246 $ singularity exec --writable /tmp/debian apt-get install python
247 $ singularity build /tmp/debian2.sif /tmp/debian
248
253 singularity(1)
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258 18-Feb-2020 Auto generated by spf13/cobra
259Auto generated by spf13/cobra Feb 2020 singularity(1)