Add ulimit to docker build.

Signed-off-by: Lei Jitang <leijitang@huawei.com>

api/client/build.go

@@ -19,6 +19,7 @@ import (
 
 	"github.com/docker/docker/api"
 	"github.com/docker/docker/graph/tags"
+	"github.com/docker/docker/opts"
 	"github.com/docker/docker/pkg/archive"
 	"github.com/docker/docker/pkg/fileutils"
 	"github.com/docker/docker/pkg/httputils"
@@ -28,6 +29,7 @@ import (
 	"github.com/docker/docker/pkg/progressreader"
 	"github.com/docker/docker/pkg/streamformatter"
 	"github.com/docker/docker/pkg/symlink"
+	"github.com/docker/docker/pkg/ulimit"
 	"github.com/docker/docker/pkg/units"
 	"github.com/docker/docker/pkg/urlutil"
 	"github.com/docker/docker/registry"
@@ -60,6 +62,11 @@ func (cli *DockerCli) CmdBuild(args ...string) error {
 	flCPUSetCpus := cmd.String([]string{"-cpuset-cpus"}, "", "CPUs in which to allow execution (0-3, 0,1)")
 	flCPUSetMems := cmd.String([]string{"-cpuset-mems"}, "", "MEMs in which to allow execution (0-3, 0,1)")
 	flCgroupParent := cmd.String([]string{"-cgroup-parent"}, "", "Optional parent cgroup for the container")
+
+	ulimits := make(map[string]*ulimit.Ulimit)
+	flUlimits := opts.NewUlimitOpt(ulimits)
+	cmd.Var(flUlimits, []string{"-ulimit"}, "Ulimit options")
+
 	cmd.Require(flag.Exact, 1)
 
 	cmd.ParseFlags(args, true)
@@ -277,6 +284,13 @@ func (cli *DockerCli) CmdBuild(args ...string) error {
 
 	v.Set("dockerfile", *dockerfileName)
 
+	ulimitsVar := flUlimits.GetList()
+	ulimitsJson, err := json.Marshal(ulimitsVar)
+	if err != nil {
+		return err
+	}
+	v.Set("ulimits", string(ulimitsJson))
+
 	headers := http.Header(make(map[string][]string))
 	buf, err := json.Marshal(cli.configFile.AuthConfigs)
 	if err != nil {

api/server/server.go

@@ -34,6 +34,7 @@ import (
 	"github.com/docker/docker/pkg/sockets"
 	"github.com/docker/docker/pkg/stdcopy"
 	"github.com/docker/docker/pkg/streamformatter"
+	"github.com/docker/docker/pkg/ulimit"
 	"github.com/docker/docker/pkg/version"
 	"github.com/docker/docker/runconfig"
 	"github.com/docker/docker/utils"
@@ -1294,6 +1295,15 @@ func (s *Server) postBuild(version version.Version, w http.ResponseWriter, r *ht
 	buildConfig.CPUSetMems = r.FormValue("cpusetmems")
 	buildConfig.CgroupParent = r.FormValue("cgroupparent")
 
+	var buildUlimits = []*ulimit.Ulimit{}
+	ulimitsJson := r.FormValue("ulimits")
+	if ulimitsJson != "" {
+		if err := json.NewDecoder(strings.NewReader(ulimitsJson)).Decode(&buildUlimits); err != nil {
+			return err
+		}
+		buildConfig.Ulimits = buildUlimits
+	}
+
 	// Job cancellation. Note: not all job types support this.
 	if closeNotifier, ok := w.(http.CloseNotifier); ok {
 		finished := make(chan struct{})

builder/evaluator.go

@@ -37,6 +37,7 @@ import (
 	"github.com/docker/docker/pkg/stringid"
 	"github.com/docker/docker/pkg/symlink"
 	"github.com/docker/docker/pkg/tarsum"
+	"github.com/docker/docker/pkg/ulimit"
 	"github.com/docker/docker/runconfig"
 	"github.com/docker/docker/utils"
 )
@@ -129,6 +130,7 @@ type builder struct {
 	cgroupParent string
 	memory       int64
 	memorySwap   int64
+	ulimits      []*ulimit.Ulimit
 
 	cancelled <-chan struct{} // When closed, job was cancelled.
 

builder/internals.go

@@ -615,6 +615,7 @@ func (b *builder) create() (*daemon.Container, error) {
 		CgroupParent: b.cgroupParent,
 		Memory:       b.memory,
 		MemorySwap:   b.memorySwap,
+		Ulimits:      b.ulimits,
 	}
 
 	config := *b.Config

builder/job.go

@@ -21,6 +21,7 @@ import (
 	"github.com/docker/docker/pkg/progressreader"
 	"github.com/docker/docker/pkg/streamformatter"
 	"github.com/docker/docker/pkg/stringid"
+	"github.com/docker/docker/pkg/ulimit"
 	"github.com/docker/docker/pkg/urlutil"
 	"github.com/docker/docker/registry"
 	"github.com/docker/docker/runconfig"
@@ -62,6 +63,7 @@ type Config struct {
 	CPUSetCpus     string
 	CPUSetMems     string
 	CgroupParent   string
+	Ulimits        []*ulimit.Ulimit
 	AuthConfigs    map[string]cliconfig.AuthConfig
 
 	Stdout  io.Writer
@@ -205,6 +207,7 @@ func Build(d *daemon.Daemon, buildConfig *Config) error {
 		cgroupParent:    buildConfig.CgroupParent,
 		memory:          buildConfig.Memory,
 		memorySwap:      buildConfig.MemorySwap,
+		ulimits:         buildConfig.Ulimits,
 		cancelled:       buildConfig.WaitCancelled(),
 		id:              stringid.GenerateRandomID(),
 	}

contrib/completion/bash/docker

@@ -395,7 +395,7 @@ _docker_build() {
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "--cgroup-parent --cpuset-cpus --cpuset-mems --cpu-shares -c --cpu-period --cpu-quota --file -f --force-rm --help --memory -m --memory-swap --no-cache --pull --quiet -q --rm --tag -t" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "--cgroup-parent --cpuset-cpus --cpuset-mems --cpu-shares -c --cpu-period --cpu-quota --file -f --force-rm --help --memory -m --memory-swap --no-cache --pull --quiet -q --rm --tag -t --ulimit" -- "$cur" ) )
 			;;
 		*)
 			local counter="$(__docker_pos_first_nonflag '--cgroup-parent|--cpuset-cpus|--cpuset-mems|--cpu-shares|-c|--cpu-period|--cpu-quota|--file|-f|--memory|-m|--memory-swap|--tag|-t')"

docs/reference/commandline/build.md

@@ -28,6 +28,7 @@ weight=1
       --cpuset-mems=""         MEMs in which to allow execution, e.g. `0-3`, `0,1`
       --cpuset-cpus=""         CPUs in which to allow execution, e.g. `0-3`, `0,1`
       --cgroup-parent=""       Optional parent cgroup for the container
+      --ulimit=[]              Ulimit options
 
 Builds Docker images from a Dockerfile and a "context". A build's context is
 the files located in the specified `PATH` or `URL`. The build process can refer
@@ -247,3 +248,6 @@ When `docker build` is run with the `--cgroup-parent` option the containers
 used in the build will be run with the [corresponding `docker run`
 flag](/reference/run/#specifying-custom-cgroups). 
 
+Using the `--ulimit` option with `docker build` will cause each build step's 
+container to be started using those [`--ulimit`
+flag values](/reference/run/#setting-ulimits-in-a-container).

integration-cli/docker_cli_build_unix_test.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"strings"
 
+	"github.com/docker/docker/pkg/ulimit"
 	"github.com/go-check/check"
 )
 
@@ -21,7 +22,7 @@ func (s *DockerSuite) TestBuildResourceConstraintsAreUsed(c *check.C) {
 		c.Fatal(err)
 	}
 
-	dockerCmdInDir(c, ctx.Dir, "build", "--no-cache", "--rm=false", "--memory=64m", "--memory-swap=-1", "--cpuset-cpus=0", "--cpuset-mems=0", "--cpu-shares=100", "--cpu-quota=8000", "-t", name, ".")
+	dockerCmdInDir(c, ctx.Dir, "build", "--no-cache", "--rm=false", "--memory=64m", "--memory-swap=-1", "--cpuset-cpus=0", "--cpuset-mems=0", "--cpu-shares=100", "--cpu-quota=8000", "--ulimit", "nofile=42", "-t", name, ".")
 
 	out, _ := dockerCmd(c, "ps", "-lq")
 
@@ -34,6 +35,7 @@ func (s *DockerSuite) TestBuildResourceConstraintsAreUsed(c *check.C) {
 		CpusetMems string
 		CPUShares  int64
 		CPUQuota   int64
+		Ulimits    []*ulimit.Ulimit
 	}
 
 	cfg, err := inspectFieldJSON(cID, "HostConfig")
@@ -45,9 +47,9 @@ func (s *DockerSuite) TestBuildResourceConstraintsAreUsed(c *check.C) {
 	if err := json.Unmarshal([]byte(cfg), &c1); err != nil {
 		c.Fatal(err, cfg)
 	}
-	if c1.Memory != 67108864 || c1.MemorySwap != -1 || c1.CpusetCpus != "0" || c1.CpusetMems != "0" || c1.CPUShares != 100 || c1.CPUQuota != 8000 {
+	if c1.Memory != 67108864 || c1.MemorySwap != -1 || c1.CpusetCpus != "0" || c1.CpusetMems != "0" || c1.CPUShares != 100 || c1.CPUQuota != 8000 || c1.Ulimits[0].Name != "nofile" || c1.Ulimits[0].Hard != 42 {
-		c.Fatalf("resource constraints not set properly:\nMemory: %d, MemSwap: %d, CpusetCpus: %s, CpusetMems: %s, CPUShares: %d, CPUQuota: %d",
+		c.Fatalf("resource constraints not set properly:\nMemory: %d, MemSwap: %d, CpusetCpus: %s, CpusetMems: %s, CPUShares: %d, CPUQuota: %d, Ulimits: %s",
-			c1.Memory, c1.MemorySwap, c1.CpusetCpus, c1.CpusetMems, c1.CPUShares, c1.CPUQuota)
+			c1.Memory, c1.MemorySwap, c1.CpusetCpus, c1.CpusetMems, c1.CPUShares, c1.CPUQuota, c1.Ulimits[0])
 	}
 
 	// Make sure constraints aren't saved to image
@@ -61,9 +63,10 @@ func (s *DockerSuite) TestBuildResourceConstraintsAreUsed(c *check.C) {
 	if err := json.Unmarshal([]byte(cfg), &c2); err != nil {
 		c.Fatal(err, cfg)
 	}
-	if c2.Memory == 67108864 || c2.MemorySwap == -1 || c2.CpusetCpus == "0" || c2.CpusetMems == "0" || c2.CPUShares == 100 || c2.CPUQuota == 8000 {
+	if c2.Memory == 67108864 || c2.MemorySwap == -1 || c2.CpusetCpus == "0" || c2.CpusetMems == "0" || c2.CPUShares == 100 || c2.CPUQuota == 8000 || c2.Ulimits != nil {
-		c.Fatalf("resource constraints leaked from build:\nMemory: %d, MemSwap: %d, CpusetCpus: %s, CpusetMems: %s, CPUShares: %d, CPUQuota: %d",
+		c.Fatalf("resource constraints leaked from build:\nMemory: %d, MemSwap: %d, CpusetCpus: %s, CpusetMems: %s, CPUShares: %d, CPUQuota: %d, Ulimits: %s",
-			c2.Memory, c2.MemorySwap, c2.CpusetCpus, c2.CpusetMems, c2.CPUShares, c2.CPUQuota)
+			c2.Memory, c2.MemorySwap, c2.CpusetCpus, c2.CpusetMems, c2.CPUShares, c2.CPUQuota, c2.Ulimits)
+
 	}
 
 }

man/docker-build.1.md

@@ -22,6 +22,7 @@ docker-build - Build a new image from the source code at PATH
 [**--cpuset-cpus**[=*CPUSET-CPUS*]]
 [**--cpuset-mems**[=*CPUSET-MEMS*]]
 [**--cgroup-parent**[=*CGROUP-PARENT*]]
+[**--ulimit**[=*[]*]]
 
 PATH | URL | -
 
@@ -142,6 +143,12 @@ two memory nodes.
   If the path is not absolute, the path is considered relative to the `cgroups` path of the init process.
 Cgroups are created if they do not already exist.
 
+**--ulimit**=[]
+  Ulimit options
+
+  For more information about `ulimit` see [Setting ulimits in a 
+container](https://docs.docker.com/reference/commandline/run/#setting-ulimits-in-a-container)
+
 # EXAMPLES
 
 ## Building an image using a Dockerfile located inside the current directory