Use environment from containers.conf

podman needs to use the environment settings in containers.conf
when setting up the containers.

Also host environment variables should be relative to server side
not the client.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

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
+	//  1) containers.conf (EnvHost, EnvHTTP, Env) 2) image data, 3 User EnvHost/EnvHTTP, 4) env-file, 5) env
-	env := map[string]string{
+	// containers.conf handled and image data handled on the server side
-		"container": "podman",
+	// 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 {
+	s.EnvHost = c.EnvHost
-		env = envLib.Join(env, osEnv)
+	s.HTTPProxy = c.HTTPProxy
-	} 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
-			}
-		}
-	}
 
 	// 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
+	// First transform the os env into a map. We need it for the labels later in
-	defaultEnvs, err := envLib.ParseSlice(rtc.Containers.Env)
+	// 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.