b16ff9f859
By setting an entrypoint in the Dockerfile this allows one to run an image and only pass arguments.
95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
package docker
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// Compare two Config struct. Do not compare the "Image" nor "Hostname" fields
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// If OpenStdin is set, then it differs
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func CompareConfig(a, b *Config) bool {
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if a == nil || b == nil ||
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a.OpenStdin || b.OpenStdin {
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return false
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}
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if a.AttachStdout != b.AttachStdout ||
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a.AttachStderr != b.AttachStderr ||
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a.User != b.User ||
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a.Memory != b.Memory ||
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a.MemorySwap != b.MemorySwap ||
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a.CpuShares != b.CpuShares ||
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a.OpenStdin != b.OpenStdin ||
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a.Tty != b.Tty {
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return false
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}
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if len(a.Cmd) != len(b.Cmd) ||
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len(a.Dns) != len(b.Dns) ||
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len(a.Env) != len(b.Env) ||
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len(a.PortSpecs) != len(b.PortSpecs) {
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return false
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}
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for i := 0; i < len(a.Cmd); i++ {
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if a.Cmd[i] != b.Cmd[i] {
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return false
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}
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}
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for i := 0; i < len(a.Dns); i++ {
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if a.Dns[i] != b.Dns[i] {
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return false
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}
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}
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for i := 0; i < len(a.Env); i++ {
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if a.Env[i] != b.Env[i] {
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return false
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}
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}
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for i := 0; i < len(a.PortSpecs); i++ {
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if a.PortSpecs[i] != b.PortSpecs[i] {
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return false
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}
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}
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for i := 0; i < len(a.Entrypoint); i++ {
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if a.Entrypoint[i] != b.Entrypoint[i] {
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return false
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}
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}
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return true
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}
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func MergeConfig(userConf, imageConf *Config) {
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if userConf.Hostname == "" {
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userConf.Hostname = imageConf.Hostname
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}
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if userConf.User == "" {
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userConf.User = imageConf.User
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}
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if userConf.Memory == 0 {
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userConf.Memory = imageConf.Memory
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}
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if userConf.MemorySwap == 0 {
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userConf.MemorySwap = imageConf.MemorySwap
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}
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if userConf.CpuShares == 0 {
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userConf.CpuShares = imageConf.CpuShares
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}
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if userConf.PortSpecs == nil || len(userConf.PortSpecs) == 0 {
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userConf.PortSpecs = imageConf.PortSpecs
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}
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if !userConf.Tty {
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userConf.Tty = imageConf.Tty
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}
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if !userConf.OpenStdin {
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userConf.OpenStdin = imageConf.OpenStdin
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}
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if !userConf.StdinOnce {
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userConf.StdinOnce = imageConf.StdinOnce
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}
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if userConf.Env == nil || len(userConf.Env) == 0 {
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userConf.Env = imageConf.Env
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}
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if userConf.Cmd == nil || len(userConf.Cmd) == 0 {
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userConf.Cmd = imageConf.Cmd
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}
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if userConf.Dns == nil || len(userConf.Dns) == 0 {
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userConf.Dns = imageConf.Dns
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}
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if userConf.Entrypoint == nil || len(userConf.Entrypoint) == 0 {
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userConf.Entrypoint = imageConf.Entrypoint
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}
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}
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