1singularity(1) singularity(1)
2
3
4
6 singularity-build - Build a Singularity image
7
8
9
11 singularity build [local options...]
12
13
14
16 IMAGE PATH:
17
18
19 When Singularity builds the container, output can be one of a few for‐
20 mats:
21
22
23 default: The compressed Singularity read only image format (default)
24 sandbox: This is a read-write container within a directory structure
25
26
27
28 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 pro‐
31 duction
32 use. The default format is immutable.
33
34
35 BUILD SPEC:
36
37
38 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
44
45 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
50
51
52 Targets can also be remote and defined by a URI of the following for‐
53 mats:
54
55
56 library:// an image library (default https://cloud.sylabs.io/library)
57 docker:// a Docker/OCI registry (default Docker Hub)
58 shub:// a Singularity registry (default Singularity Hub)
59 oras:// an OCI registry that holds SIF files using ORAS
60
61
62
63
65 --arch="amd64" architecture for remote build
66
67
68 --builder="" remote Build Service URL, setting this implies --re‐
69 mote
70
71
72 -d, --detached[=false] submit build job and print build ID (no
73 real-time logs and requires --remote)
74
75
76 --disable-cache[=false] do not use cache or create cache
77
78
79 --docker-login[=false] login to a Docker Repository interactively
80
81
82 -e, --encrypt[=false] build an image with an encrypted file system
83
84
85 -f, --fakeroot[=false] build using user namespace to fake root
86 user (requires a privileged installation)
87
88
89 --fix-perms[=false] ensure owner has rwX permissions on all con‐
90 tainer content for oci/docker sources
91
92
93 -F, --force[=false] overwrite an image file if it exists
94
95
96 -h, --help[=false] help for build
97
98
99 --json[=false] interpret build definition as JSON
100
101
102 --library="" container Library URL
103
104
105 --no-cleanup[=false] do NOT clean up bundle after failed build,
106 can be helpful for debugging
107
108
109 --nohttps[=false] do NOT use HTTPS with the docker:// transport
110 (useful for local docker registries without a certificate)
111
112
113 -T, --notest[=false] build without running tests in %test section
114
115
116 --passphrase[=false] prompt for an encryption passphrase
117
118
119 --pem-path="" enter an path to a PEM formated RSA key for an en‐
120 crypted container
121
122
123 -r, --remote[=false] build image remotely (does not require root)
124
125
126 -s, --sandbox[=false] build image as sandbox format (chroot direc‐
127 tory structure)
128
129
130 --section=[all] only run specific section(s) of deffile (setup,
131 post, files, environment, test, labels, none)
132
133
134 -u, --update[=false] run definition over existing container (skips
135 header)
136
137
138
140 DEF FILE BASE OS:
141
142 Library:
143 Bootstrap: library
144 From: debian:9
145
146 Docker:
147 Bootstrap: docker
148 From: tensorflow/tensorflow:latest
149 IncludeCmd: yes # Use the CMD as runscript instead of ENTRYPOINT
150
151 Singularity Hub:
152 Bootstrap: shub
153 From: singularityhub/centos
154
155 YUM/RHEL:
156 Bootstrap: yum
157 OSVersion: 7
158 MirrorURL: http://mirror.centos.org/centos-%{OSVERSION}/%{OSVERSION}/os/x86_64/
159 Include: yum
160
161 Debian/Ubuntu:
162 Bootstrap: debootstrap
163 OSVersion: trusty
164 MirrorURL: http://us.archive.ubuntu.com/ubuntu/
165
166 Local Image:
167 Bootstrap: localimage
168 From: /home/dave/starter.img
169
170 Scratch:
171 Bootstrap: scratch # Populate the container with a minimal rootfs in %setup
172
173 DEFFILE SECTIONS:
174
175 %pre
176 echo "This is a scriptlet that will be executed on the host, as root before"
177 echo "the container has been bootstrapped. This section is not commonly used."
178
179 %setup
180 echo "This is a scriptlet that will be executed on the host, as root, after"
181 echo "the container has been bootstrapped. To install things into the container"
182 echo "reference the file system location with $SINGULARITY_ROOTFS."
183
184 %post
185 echo "This scriptlet section will be executed from within the container after"
186 echo "the bootstrap/base has been created and setup."
187
188 %test
189 echo "Define any test commands that should be executed after container has been"
190 echo "built. This scriptlet will be executed from within the running container"
191 echo "as the root user. Pay attention to the exit/return value of this scriptlet"
192 echo "as any non-zero exit code will be assumed as failure."
193 exit 0
194
195 %runscript
196 echo "Define actions for the container to be executed with the run command or"
197 echo "when container is executed."
198
199 %startscript
200 echo "Define actions for container to perform when started as an instance."
201
202 %labels
203 HELLO MOTO
204 KEY VALUE
205
206 %files
207 /path/on/host/file.txt /path/on/container/file.txt
208 relative_file.txt /path/on/container/relative_file.txt
209
210 %environment
211 LUKE=goodguy
212 VADER=badguy
213 HAN=someguy
214 export HAN VADER LUKE
215
216 %help
217 This is a text file to be displayed with the run-help command.
218
219 COMMANDS:
220
221 Build a sif file from a Singularity recipe file:
222 $ singularity build /tmp/debian0.sif /path/to/debian.def
223
224 Build a sif image from the Library:
225 $ singularity build /tmp/debian1.sif library://debian:latest
226
227 Build a base sandbox from DockerHub, make changes to it, then build sif
228 $ singularity build --sandbox /tmp/debian docker://debian:latest
229 $ singularity exec --writable /tmp/debian apt-get install python
230 $ singularity build /tmp/debian2.sif /tmp/debian
231
232
233
234
236 singularity(1)
237
238
239
241 26-May-2021 Auto generated by spf13/cobra
242
243
244
245Auto generated by spf13/cobra May 2021 singularity(1)