Merge pull request #7355 from rhatdan/env

Use environment from containers.conf

cmd/podman/common/specgen.go

@@ -307,10 +307,11 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
 	// ENVIRONMENT VARIABLES
 	//
 	// Precedence order (higher index wins):
-	//  1) env-host, 2) image data, 3) env-file, 4) env
-	env := map[string]string{
-		"container": "podman",
-	}
+	//  1) containers.conf (EnvHost, EnvHTTP, Env) 2) image data, 3 User EnvHost/EnvHTTP, 4) env-file, 5) env
+	// containers.conf handled and image data handled on the server side
+	// user specified EnvHost and EnvHTTP handled on Server Side relative to Server
+	// env-file and env handled on client side
+	var env map[string]string
 
 	// First transform the os env into a map. We need it for the labels later in
 	// any case.
@@ -319,24 +320,8 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
 		return errors.Wrap(err, "error parsing host environment variables")
 	}
 
-	if c.EnvHost {
-		env = envLib.Join(env, osEnv)
-	} else if c.HTTPProxy {
-		for _, envSpec := range []string{
-			"http_proxy",
-			"HTTP_PROXY",
-			"https_proxy",
-			"HTTPS_PROXY",
-			"ftp_proxy",
-			"FTP_PROXY",
-			"no_proxy",
-			"NO_PROXY",
-		} {
-			if v, ok := osEnv[envSpec]; ok {
-				env[envSpec] = v
-			}
-		}
-	}
+	s.EnvHost = c.EnvHost
+	s.HTTPProxy = c.HTTPProxy
 
 	// env-file overrides any previous variables
 	for _, f := range c.EnvFile {

pkg/specgen/generate/container.go

@@ -2,6 +2,7 @@ package generate
 
 import (
 	"context"
+	"os"
 
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/podman/v2/libpod"
@@ -62,14 +63,24 @@ func CompleteSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerat
 	if err != nil {
 		return nil, err
 	}
-	// Get Default Environment
-	defaultEnvs, err := envLib.ParseSlice(rtc.Containers.Env)
+	// First transform the os env into a map. We need it for the labels later in
+	// any case.
+	osEnv, err := envLib.ParseSlice(os.Environ())
 	if err != nil {
-		return nil, errors.Wrap(err, "Env fields in containers.conf failed to parse")
+		return nil, errors.Wrap(err, "error parsing host environment variables")
 	}
 
+	// Get Default Environment from containers.conf
+	defaultEnvs, err := envLib.ParseSlice(rtc.GetDefaultEnv())
+	if err != nil {
+		return nil, errors.Wrap(err, "error parsing fields in containers.conf")
+	}
+	if defaultEnvs["containers"] == "" {
+		defaultEnvs["containers"] = "podman"
+	}
 	var envs map[string]string
 
+	// Image Environment defaults
 	if newImage != nil {
 		// Image envs from the image if they don't exist
 		// already, overriding the default environments
@@ -82,9 +93,30 @@ func CompleteSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerat
 		if err != nil {
 			return nil, errors.Wrap(err, "Env fields from image failed to parse")
 		}
+		defaultEnvs = envLib.Join(defaultEnvs, envs)
 	}
 
-	s.Env = envLib.Join(envLib.Join(defaultEnvs, envs), s.Env)
+	// Caller Specified defaults
+	if s.EnvHost {
+		defaultEnvs = envLib.Join(defaultEnvs, osEnv)
+	} else if s.HTTPProxy {
+		for _, envSpec := range []string{
+			"http_proxy",
+			"HTTP_PROXY",
+			"https_proxy",
+			"HTTPS_PROXY",
+			"ftp_proxy",
+			"FTP_PROXY",
+			"no_proxy",
+			"NO_PROXY",
+		} {
+			if v, ok := osEnv[envSpec]; ok {
+				defaultEnvs[envSpec] = v
+			}
+		}
+	}
+
+	s.Env = envLib.Join(defaultEnvs, s.Env)
 
 	// Labels and Annotations
 	annotations := make(map[string]string)

pkg/specgen/specgen.go

@@ -43,6 +43,13 @@ type ContainerBasicConfig struct {
 	// image's configuration.
 	// Optional.
 	Command []string `json:"command,omitempty"`
+	// EnvHost indicates that the host environment should be added to container
+	// Optional.
+	EnvHost bool `json:"env_host,omitempty"`
+	// EnvHTTPProxy indicates that the http host proxy environment variables
+	// should be added to container
+	// Optional.
+	HTTPProxy bool `json:"httpproxy,omitempty"`
 	// Env is a set of environment variables that will be set in the
 	// container.
 	// Optional.