1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
package main
import (
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/pkg/rootless"
"github.com/pkg/errors"
"github.com/projectatomic/buildah"
"github.com/projectatomic/buildah/imagebuildah"
buildahcli "github.com/projectatomic/buildah/pkg/cli"
"github.com/projectatomic/buildah/pkg/parse"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
var (
buildDescription = "Builds an OCI or Docker image using instructions from one\n" +
"or more Dockerfiles and a specified build context directory."
buildCommand = cli.Command{
Name: "build",
Usage: "Build an image using instructions from Dockerfiles",
Description: buildDescription,
Flags: append(buildahcli.BudFlags, buildahcli.FromAndBudFlags...),
Action: buildCmd,
ArgsUsage: "CONTEXT-DIRECTORY | URL",
SkipArgReorder: true,
OnUsageError: usageErrorHandler,
}
)
func getDockerfiles(files []string) []string {
var dockerfiles []string
for _, f := range files {
if f == "-" {
dockerfiles = append(dockerfiles, "/dev/stdin")
} else {
dockerfiles = append(dockerfiles, f)
}
}
return dockerfiles
}
func buildCmd(c *cli.Context) error {
// The following was taken directly from projectatomic/buildah/cmd/bud.go
// TODO Find a away to vendor more of this in rather than copy from bud
output := ""
tags := []string{}
if c.IsSet("tag") || c.IsSet("t") {
tags = c.StringSlice("tag")
if len(tags) > 0 {
output = tags[0]
tags = tags[1:]
}
}
pullPolicy := imagebuildah.PullNever
if c.BoolT("pull") {
pullPolicy = imagebuildah.PullIfMissing
}
if c.Bool("pull-always") {
pullPolicy = imagebuildah.PullAlways
}
args := make(map[string]string)
if c.IsSet("build-arg") {
for _, arg := range c.StringSlice("build-arg") {
av := strings.SplitN(arg, "=", 2)
if len(av) > 1 {
args[av[0]] = av[1]
} else {
delete(args, av[0])
}
}
}
dockerfiles := getDockerfiles(c.StringSlice("file"))
format, err := getFormat(c)
if err != nil {
return nil
}
contextDir := ""
cliArgs := c.Args()
if len(cliArgs) > 0 {
// The context directory could be a URL. Try to handle that.
tempDir, subDir, err := imagebuildah.TempDirForURL("", "buildah", cliArgs[0])
if err != nil {
return errors.Wrapf(err, "error prepping temporary context directory")
}
if tempDir != "" {
// We had to download it to a temporary directory.
// Delete it later.
defer func() {
if err = os.RemoveAll(tempDir); err != nil {
logrus.Errorf("error removing temporary directory %q: %v", contextDir, err)
}
}()
contextDir = filepath.Join(tempDir, subDir)
} else {
// Nope, it was local. Use it as is.
absDir, err := filepath.Abs(cliArgs[0])
if err != nil {
return errors.Wrapf(err, "error determining path to directory %q", cliArgs[0])
}
contextDir = absDir
}
cliArgs = cliArgs.Tail()
} else {
// No context directory or URL was specified. Try to use the
// home of the first locally-available Dockerfile.
for i := range dockerfiles {
if strings.HasPrefix(dockerfiles[i], "http://") ||
strings.HasPrefix(dockerfiles[i], "https://") ||
strings.HasPrefix(dockerfiles[i], "git://") ||
strings.HasPrefix(dockerfiles[i], "github.com/") {
continue
}
absFile, err := filepath.Abs(dockerfiles[i])
if err != nil {
return errors.Wrapf(err, "error determining path to file %q", dockerfiles[i])
}
contextDir = filepath.Dir(absFile)
dockerfiles[i], err = filepath.Rel(contextDir, absFile)
if err != nil {
return errors.Wrapf(err, "error determining path to file %q", dockerfiles[i])
}
break
}
}
if contextDir == "" {
return errors.Errorf("no context directory specified, and no dockerfile specified")
}
if len(dockerfiles) == 0 {
dockerfiles = append(dockerfiles, filepath.Join(contextDir, "Dockerfile"))
}
if err := parse.ValidateFlags(c, buildahcli.BudFlags); err != nil {
return err
}
runtimeFlags := []string{}
for _, arg := range c.StringSlice("runtime-flag") {
runtimeFlags = append(runtimeFlags, "--"+arg)
}
// end from buildah
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
var stdout, stderr, reporter *os.File
stdout = os.Stdout
stderr = os.Stderr
reporter = os.Stderr
if c.IsSet("logfile") {
f, err := os.OpenFile(c.String("logfile"), os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0600)
if err != nil {
return errors.Errorf("error opening logfile %q: %v", c.String("logfile"), err)
}
defer f.Close()
logrus.SetOutput(f)
stdout = f
stderr = f
reporter = f
}
systemContext, err := parse.SystemContextFromOptions(c)
if err != nil {
return errors.Wrapf(err, "error building system context")
}
commonOpts, err := parse.CommonBuildOptions(c)
if err != nil {
return err
}
namespaceOptions, networkPolicy, err := parse.NamespaceOptions(c)
if err != nil {
return errors.Wrapf(err, "error parsing namespace-related options")
}
usernsOption, idmappingOptions, err := parse.IDMappingOptions(c)
if err != nil {
return errors.Wrapf(err, "error parsing ID mapping options")
}
namespaceOptions.AddOrReplace(usernsOption...)
options := imagebuildah.BuildOptions{
ContextDirectory: contextDir,
PullPolicy: pullPolicy,
Compression: imagebuildah.Gzip,
Quiet: c.Bool("quiet"),
SignaturePolicyPath: c.String("signature-policy"),
Args: args,
Output: output,
AdditionalTags: tags,
Out: stdout,
Err: stderr,
ReportWriter: reporter,
Runtime: c.String("runtime"),
RuntimeArgs: runtimeFlags,
OutputFormat: format,
SystemContext: systemContext,
NamespaceOptions: namespaceOptions,
ConfigureNetwork: networkPolicy,
CNIPluginPath: c.String("cni-plugin-path"),
CNIConfigDir: c.String("cni-config-dir"),
IDMappingOptions: idmappingOptions,
CommonBuildOpts: commonOpts,
DefaultMountsFilePath: c.GlobalString("default-mounts-file"),
IIDFile: c.String("iidfile"),
Squash: c.Bool("squash"),
Labels: c.StringSlice("label"),
Annotations: c.StringSlice("annotation"),
Layers: c.Bool("layers"),
NoCache: c.Bool("no-cache"),
RemoveIntermediateCtrs: c.BoolT("rm"),
ForceRmIntermediateCtrs: c.Bool("force-rm"),
}
if c.Bool("quiet") {
options.ReportWriter = ioutil.Discard
}
if rootless.IsRootless() {
options.Isolation = buildah.IsolationOCIRootless
}
return runtime.Build(getContext(), options, dockerfiles...)
}
|
